{"id":94,"date":"2026-09-19T17:52:00","date_gmt":"2026-09-19T09:52:00","guid":{"rendered":"https:\/\/decagrammaton.xyz\/?p=94"},"modified":"2026-09-18T10:53:11","modified_gmt":"2026-09-18T02:53:11","slug":"011-c%e8%af%ad%e8%a8%80%e6%96%87%e4%bb%b6%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/decagrammaton.xyz\/?p=94","title":{"rendered":"011-C\u8bed\u8a00\u6587\u4ef6\u64cd\u4f5c"},"content":{"rendered":"\n
\n\n\n\n

\u524d\u9762\u6211\u4eec\u5b66\u4e60\u4e86\uff1a<\/p>\n\n\n\n

\u6570\u7ec4\n\u51fd\u6570\n\u6307\u9488\n\u7ed3\u6784\u4f53\n\u52a8\u6001\u5185\u5b58<\/code><\/pre>\n\n\n\n
\u8fd9\u4e9b\u6570\u636e\u9ed8\u8ba4\u90fd\u5b58\u5728\u4e8e\uff1a<\/p>\n\n\n\n
\u5185\u5b58\u4e2d\u3002<\/strong><\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>int<\/span> a =<\/span> 10<\/span>;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff1a<\/p>\n\n\n\n
a\n\u2193\n\u5185\u5b58<\/code><\/pre>\n\n\n\n
\u4f46\u662f\u7a0b\u5e8f\u7ed3\u675f\u4ee5\u540e\uff1a<\/p>\n\n\n\n
\u7a0b\u5e8f\u7ed3\u675f\n\u2193\n\u5185\u5b58\u91ca\u653e\n\u2193\na \u6d88\u5931<\/code><\/pre>\n\n\n\n
\u5982\u679c\u5e0c\u671b\u6570\u636e\u80fd\u591f\u5728\u7a0b\u5e8f\u5173\u95ed\u4e4b\u540e\u4ecd\u7136\u5b58\u5728\uff0c\u5c31\u9700\u8981\u628a\u6570\u636e\u4fdd\u5b58\u5230\uff1a<\/p>\n\n\n\n
\u6587\u4ef6\u3002<\/strong><\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
\u7a0b\u5e8f\u8fd0\u884c\n   \u2193\n\u8bfb\u53d6\u6587\u4ef6\n   \u2193\n\u4fee\u6539\u6570\u636e\n   \u2193\n\u4fdd\u5b58\u6587\u4ef6\n   \u2193\n\u7a0b\u5e8f\u7ed3\u675f\n   \u2193\n\u6570\u636e\u4ecd\u7136\u5b58\u5728<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e00\u3001\u4ec0\u4e48\u662f\u6587\u4ef6<\/h1>\n\n\n\n
\u6587\u4ef6\u5c31\u662f\u4fdd\u5b58\u5728\u5b58\u50a8\u8bbe\u5907\u4e0a\u7684\u6570\u636e\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
student.txt\ndata.txt\nconfig.txt\nsave.dat<\/code><\/pre>\n\n\n\n
\u7a0b\u5e8f\u53ef\u4ee5\uff1a<\/p>\n\n\n\n
\u521b\u5efa\u6587\u4ef6\n\u8bfb\u53d6\u6587\u4ef6\n\u5199\u5165\u6587\u4ef6\n\u4fee\u6539\u6587\u4ef6\n\u8ffd\u52a0\u5185\u5bb9\n\u5173\u95ed\u6587\u4ef6<\/code><\/pre>\n\n\n\n
C \u8bed\u8a00\u4e3b\u8981\u901a\u8fc7\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6765\u64cd\u4f5c\u6587\u4ef6\u3002<\/p>\n\n\n\n
\u9700\u8981\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e8c\u3001FILE \u662f\u4ec0\u4e48<\/h1>\n\n\n\n
C \u8bed\u8a00\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6765\u8868\u793a\u4e00\u4e2a\u6587\u4ef6\u6d41\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u91cc\uff1a<\/p>\n\n\n\n
fp\n\u2193\n\u6307\u5411\u4e00\u4e2a FILE\n\u2193\n\u4ee3\u8868\u6253\u5f00\u7684\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\u6210\uff1a<\/p>\n\n\n\n
\u78c1\u76d8\u4e0a\u7684\u6587\u4ef6\n      \u2193\n    fopen()\n      \u2193\n   FILE *\n      \u2193\n    fp\n      \u2193\n\u7a0b\u5e8f\u64cd\u4f5c\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e09\u3001\u6253\u5f00\u6587\u4ef6\uff1afopen<\/h1>\n\n\n\n
\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>fopen(<\/span>\"\u6587\u4ef6\u540d\"<\/span>,<\/span> \"\u6a21\u5f0f\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u91cc\uff1a<\/p>\n\n\n\n
test.txt<\/code><\/pre>\n\n\n\n
\u662f\u6587\u4ef6\u540d\u3002<\/p>\n\n\n\n
w<\/code><\/pre>\n\n\n\n
\u662f\u6253\u5f00\u6a21\u5f0f\u3002<\/p>\n\n\n\n
\n\n\n\n
\u56db\u3001fopen \u7684\u8fd4\u56de\u503c<\/h1>\n\n\n\n
\u5982\u679c\u6253\u5f00\u6210\u529f\uff1a<\/p>\n\n\n\n
<\/a>fopen(...)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f1a\u8fd4\u56de\u4e00\u4e2a\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u5982\u679c\u5931\u8d25\uff1a<\/p>\n\n\n\n
<\/a>fopen(...)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f1a\u8fd4\u56de\uff1a<\/p>\n\n\n\n
<\/a>NULL<\/span><\/code><\/pre><\/div>\n\n\n\n
\u6240\u4ee5\u5e94\u8be5\u68c0\u67e5\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    printf(<\/span>\"\u6587\u4ef6\u6253\u5f00\u5931\u8d25<\/span>\\n<\/span>\"<\/span>);<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u4e2a\u601d\u60f3\u548c\u524d\u9762\uff1a<\/p>\n\n\n\n
<\/a>malloc()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd4\u56de NULL<\/code> \u65f6\u68c0\u67e5\uff0c\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e94\u3001\u5173\u95ed\u6587\u4ef6\uff1afclose<\/h1>\n\n\n\n
\u6253\u5f00\u6587\u4ef6\u4ee5\u540e\uff0c\u7528\u5b8c\u9700\u8981\uff1a<\/p>\n\n\n\n
<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span>\n<\/a><\/span>\n<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6587\u4ef6\u64cd\u4f5c\u7684\u57fa\u672c\u6d41\u7a0b\uff1a<\/p>\n\n\n\n
fopen\n \u2193\n\u4f7f\u7528\u6587\u4ef6\n \u2193\nfclose<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\u8bb0\u6210\uff1a<\/p>\n\n\n\n
\u6253\u5f00\n \u2193\n\u8bfb\/\u5199\n \u2193\n\u5173\u95ed<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u516d\u3001\u6587\u4ef6\u6253\u5f00\u6a21\u5f0f<\/h1>\n\n\n\n
fopen()<\/code> \u7b2c\u4e8c\u4e2a\u53c2\u6570\u975e\u5e38\u91cd\u8981\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
r\nw\na\nr+\nw+\na+<\/code><\/pre>\n\n\n\n
\u8fd8\u6709\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff1a<\/p>\n\n\n\n
rb\nwb\nab\nrb+\nwb+\nab+<\/code><\/pre>\n\n\n\n
\u5148\u91cd\u70b9\u5b66\u4e60\uff1a<\/p>\n\n\n\n
r\nw\na<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e03\u3001r\uff1a\u8bfb\u53d6\u6587\u4ef6<\/h1>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
r<\/code>\uff1a<\/p>\n\n\n\n
read<\/strong><\/p>\n\n\n\n
\u8868\u793a\u8bfb\u53d6\u3002<\/p>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff1a<\/p>\n\n\n\n
\u6253\u5f00\u5931\u8d25<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    printf(<\/span>\"\u6587\u4ef6\u4e0d\u5b58\u5728<\/span>\\n<\/span>\"<\/span>);<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u516b\u3001w\uff1a\u5199\u5165\u6587\u4ef6<\/h1>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
w<\/code>\uff1a<\/p>\n\n\n\n
write<\/strong><\/p>\n\n\n\n
\u8868\u793a\u5199\u5165\u3002<\/p>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff1a<\/p>\n\n\n\n
\u521b\u5efa\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u5b58\u5728\uff1a<\/p>\n\n\n\n
\u539f\u6765\u7684\u5185\u5bb9\u4f1a\u88ab\u6e05\u7a7a<\/code><\/pre>\n\n\n\n
\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\u3002<\/p>\n\n\n\n
\u4f8b\u5982\u539f\u6765\u7684\uff1a<\/p>\n\n\n\n
test.txt\n\nhello\nworld<\/code><\/pre>\n\n\n\n
\u6267\u884c\uff1a<\/p>\n\n\n\n
<\/a>fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4e4b\u540e\u518d\u5199\u5165\uff1a<\/p>\n\n\n\n
abc<\/code><\/pre>\n\n\n\n
\u6587\u4ef6\u4f1a\u53d8\u6210\uff1a<\/p>\n\n\n\n
abc<\/code><\/pre>\n\n\n\n
\u800c\u4e0d\u662f\uff1a<\/p>\n\n\n\n
hello\nworld\nabc<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e5d\u3001a\uff1a\u8ffd\u52a0<\/h1>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"a\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
a<\/code>\uff1a<\/p>\n\n\n\n
append<\/strong><\/p>\n\n\n\n
\u8868\u793a\u8ffd\u52a0\u3002<\/p>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff1a<\/p>\n\n\n\n
\u521b\u5efa\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u5b58\u5728\uff1a<\/p>\n\n\n\n
\u4fdd\u7559\u539f\u6765\u7684\u5185\u5bb9<\/code><\/pre>\n\n\n\n
\u65b0\u5185\u5bb9\u4f1a\u5199\u5230\u6587\u4ef6\u672b\u5c3e\u3002<\/p>\n\n\n\n
\u4f8b\u5982\u539f\u672c\uff1a<\/p>\n\n\n\n
hello\nworld<\/code><\/pre>\n\n\n\n
\u6267\u884c\uff1a<\/p>\n\n\n\n
<\/a>fprintf(<\/span>fp,<\/span> \"abc<\/span>\\n<\/span>\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u53d8\u6210\uff1a<\/p>\n\n\n\n
hello\nworld\nabc<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u3001fputc\uff1a\u5199\u5165\u4e00\u4e2a\u5b57\u7b26<\/h1>\n\n\n\n
\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fputc()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u683c\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>fputc(<\/span>\u5b57\u7b26,<\/span> \u6587\u4ef6\u6307\u9488);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span>\n<\/a><\/span>\n<\/a>fputc(<\/span>'A'<\/span>,<\/span> fp);<\/span><\/span>\n<\/a>fputc(<\/span>'B'<\/span>,<\/span> fp);<\/span><\/span>\n<\/a>fputc(<\/span>'C'<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6587\u4ef6\u5185\u5bb9\uff1a<\/p>\n\n\n\n
ABC<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u4e00\u3001fgetc\uff1a\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26<\/h1>\n\n\n\n
\u5bf9\u5e94\uff1a<\/p>\n\n\n\n
<\/a>fgetc()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span>\n<\/a><\/span>\n<\/a>char<\/span> c =<\/span> fgetc(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>printf(<\/span>\"<\/span>%c\\n<\/span>\"<\/span>,<\/span> c);<\/span><\/span>\n<\/a><\/span>\n<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u5982\u679c\u6587\u4ef6\u5185\u5bb9\u662f\uff1a<\/p>\n\n\n\n
Hello<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\u7b2c\u4e00\u6b21 fgetc()<\/code> \u4f1a\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
H<\/code><\/pre>\n\n\n\n
\u518d\u6b21\u8c03\u7528\uff1a<\/p>\n\n\n\n
<\/a>c =<\/span> fgetc(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f1a\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
e<\/code><\/pre>\n\n\n\n
\u56e0\u4e3a\u6587\u4ef6\u6709\u4e00\u4e2a\uff1a<\/p>\n\n\n\n
\u5f53\u524d\u4f4d\u7f6e\u3002<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u5341\u4e8c\u3001\u5faa\u73af\u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6<\/h1>\n\n\n\n
\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>while<\/span> ((<\/span>c =<\/span> fgetc(<\/span>fp))<\/span> !=<\/span> EOF)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    int<\/span> c;<\/span><\/span>\n<\/a><\/span>\n<\/a>    while<\/span> ((<\/span>c =<\/span> fgetc(<\/span>fp))<\/span> !=<\/span> EOF)<\/span> {<\/span><\/span>\n<\/a>        putchar(<\/span>c);<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u91cc\uff1a<\/p>\n\n\n\n
fgetc()\n\u2193\n\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\n\u2193\n\u6587\u4ef6\u7ed3\u675f\uff1f\n\u2193\n\u4e0d\u662f \u2192 \u7ee7\u7eed\n\u2193\n\u662f \u2192 EOF<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u4e09\u3001\u4e3a\u4ec0\u4e48 c \u8981\u7528 int<\/h1>\n\n\n\n
\u6ce8\u610f\u8fd9\u91cc\uff1a<\/p>\n\n\n\n
<\/a>int<\/span> c;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u800c\u4e0d\u662f\uff1a<\/p>\n\n\n\n
<\/a>char<\/span> c;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u56e0\u4e3a\uff1a<\/p>\n\n\n\n
<\/a>fgetc()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u9700\u8981\u80fd\u591f\u8fd4\u56de\uff1a<\/p>\n\n\n\n
\u666e\u901a\u5b57\u7b26<\/code><\/pre>\n\n\n\n
\u4ee5\u53ca\uff1a<\/p>\n\n\n\n
EOF<\/code><\/pre>\n\n\n\n
\u6240\u4ee5\u901a\u5e38\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>int<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4fdd\u5b58 fgetc()<\/code> \u7684\u8fd4\u56de\u503c\u3002<\/p>\n\n\n\n
\u8fd9\u662f\u6587\u4ef6\u64cd\u4f5c\u4e2d\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u7ec6\u8282\u3002<\/p>\n\n\n\n
\n\n\n\n
\u5341\u56db\u3001fputs\uff1a\u5199\u5165\u5b57\u7b26\u4e32<\/h1>\n\n\n\n
\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fputs()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span>\n<\/a><\/span>\n<\/a>fputs(<\/span>\"Hello World<\/span>\\n<\/span>\"<\/span>,<\/span> fp);<\/span><\/span>\n<\/a>fputs(<\/span>\"C Language<\/span>\\n<\/span>\"<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6587\u4ef6\uff1a<\/p>\n\n\n\n
Hello World\nC Language<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u4e94\u3001fgets\uff1a\u8bfb\u53d6\u4e00\u884c<\/h1>\n\n\n\n
\u4e0e fputs()<\/code> \u5bf9\u5e94\uff1a<\/p>\n\n\n\n
<\/a>fgets()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>char<\/span> buffer[<\/span>100<\/span>];<\/span><\/span>\n<\/a><\/span>\n<\/a>fgets(<\/span>buffer,<\/span> 100<\/span>,<\/span> fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n
\u6700\u591a\u8bfb\u53d6 99 \u4e2a\u5b57\u7b26<\/code><\/pre>\n\n\n\n
\u5e76\u9884\u7559\uff1a<\/p>\n\n\n\n
\\0<\/code><\/pre>\n\n\n\n
\u7ed3\u675f\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\n\n\n\n
\u5341\u516d\u3001\u4f7f\u7528 fgets \u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6<\/h1>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    char<\/span> buffer[<\/span>100<\/span>];<\/span><\/span>\n<\/a><\/span>\n<\/a>    while<\/span> (<\/span>fgets(<\/span>buffer,<\/span> sizeof<\/span>(<\/span>buffer),<\/span> fp)<\/span> !=<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        printf(<\/span>\"<\/span>%s<\/span>\"<\/span>,<\/span> buffer);<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u6837\u4f1a\uff1a<\/p>\n\n\n\n
\u4e00\u6b21\u8bfb\u53d6\u4e00\u884c\n\u2193\n\u7ee7\u7eed\u8bfb\u53d6\n\u2193\n\u76f4\u5230\u6587\u4ef6\u7ed3\u675f<\/code><\/pre>\n\n\n\n
\u5bf9\u4e8e\u666e\u901a\u6587\u672c\u6587\u4ef6\uff0c\u8fd9\u662f\u975e\u5e38\u5e38\u89c1\u7684\u5199\u6cd5\u3002<\/p>\n\n\n\n
\n\n\n\n
\u5341\u4e03\u3001fprintf\uff1a\u683c\u5f0f\u5316\u5199\u5165<\/h1>\n\n\n\n
\u5982\u679c\u9700\u8981\u50cf\uff1a<\/p>\n\n\n\n
<\/a>printf()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4e00\u6837\u5199\u683c\u5f0f\u5316\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fprintf()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u683c\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>fprintf(<\/span>\u6587\u4ef6\u6307\u9488,<\/span> \"\u683c\u5f0f\"<\/span>,<\/span> \u6570\u636e);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> age =<\/span> 18<\/span>;<\/span><\/span>\n<\/a>double<\/span> score =<\/span> 95.5<\/span>;<\/span><\/span>\n<\/a><\/span>\n<\/a>fprintf(<\/span>fp,<\/span> \"age = <\/span>%d\\n<\/span>\"<\/span>,<\/span> age);<\/span><\/span>\n<\/a>fprintf(<\/span>fp,<\/span> \"score = <\/span>%.2f\\n<\/span>\"<\/span>,<\/span> score);<\/span><\/span>\n<\/a><\/span>\n<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6587\u4ef6\uff1a<\/p>\n\n\n\n
age = 18\nscore = 95.50<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u516b\u3001printf \u548c fprintf<\/h1>\n\n\n\n
\u4f60\u4e4b\u524d\uff1a<\/p>\n\n\n\n
<\/a>printf(<\/span>\"age = <\/span>%d\\n<\/span>\"<\/span>,<\/span> age);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u662f\u5728\uff1a<\/p>\n\n\n\n
\u63a7\u5236\u53f0<\/code><\/pre>\n\n\n\n
\u8f93\u51fa\u3002<\/p>\n\n\n\n
\u800c\uff1a<\/p>\n\n\n\n
<\/a>fprintf(<\/span>fp,<\/span> \"age = <\/span>%d\\n<\/span>\"<\/span>,<\/span> age);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u662f\u5728\uff1a<\/p>\n\n\n\n
\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u8f93\u51fa\u3002<\/p>\n\n\n\n
\u53ef\u4ee5\u7b80\u5355\u7406\u89e3\uff1a<\/p>\n\n\n\n
printf\n\u2193\n\u6807\u51c6\u8f93\u51fa\n\nfprintf\n\u2193\n\u6307\u5b9a FILE \u8f93\u51fa<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u5341\u4e5d\u3001fscanf\uff1a\u4ece\u6587\u4ef6\u8bfb\u53d6\u683c\u5f0f\u5316\u6570\u636e<\/h1>\n\n\n\n
\u4e0e\uff1a<\/p>\n\n\n\n
<\/a>scanf()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7c7b\u4f3c\u3002<\/p>\n\n\n\n
\u4f8b\u5982\u6587\u4ef6\uff1a<\/p>\n\n\n\n
18 95.5<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\uff1a<\/p>\n\n\n\n
<\/a>int<\/span> age;<\/span><\/span>\n<\/a>double<\/span> score;<\/span><\/span>\n<\/a><\/span>\n<\/a>fscanf(<\/span>fp,<\/span> \"<\/span>%d<\/span> <\/span>%lf<\/span>\"<\/span>,<\/span> &<\/span>age,<\/span> &<\/span>score);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u6837\uff1a<\/p>\n\n\n\n
\u6587\u4ef6\n \u2193\nfscanf\n \u2193\n\u53d8\u91cf<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u3001\u5b8c\u6574\u7684\u6587\u672c\u8bfb\u5199<\/h1>\n\n\n\n
\u5199\u5165\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"student.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fprintf(<\/span>fp,<\/span> \"Alice 18 95.5<\/span>\\n<\/span>\"<\/span>);<\/span><\/span>\n<\/a>    fprintf(<\/span>fp,<\/span> \"Bob 19 88.0<\/span>\\n<\/span>\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u6587\u4ef6\u53d8\u6210\uff1a<\/p>\n\n\n\n
Alice 18 95.5\nBob 19 88.0<\/code><\/pre>\n\n\n\n
\u7136\u540e\u518d\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"student.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    char<\/span> name[<\/span>50<\/span>];<\/span><\/span>\n<\/a>    int<\/span> age;<\/span><\/span>\n<\/a>    double<\/span> score;<\/span><\/span>\n<\/a><\/span>\n<\/a>    while<\/span> (<\/span>fscanf(<\/span>fp,<\/span> \"<\/span>%49s<\/span> <\/span>%d<\/span> <\/span>%lf<\/span>\"<\/span>,<\/span><\/span>\n<\/a>                  name,<\/span> &<\/span>age,<\/span> &<\/span>score)<\/span> ==<\/span> 3<\/span>)<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>        printf(<\/span><\/span>\n<\/a>            \"<\/span>%s<\/span> <\/span>%d<\/span> <\/span>%.2f\\n<\/span>\"<\/span>,<\/span><\/span>\n<\/a>            name,<\/span><\/span>\n<\/a>            age,<\/span><\/span>\n<\/a>            score<\/span>\n<\/a>        );<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e00\u3001\u6587\u4ef6\u6307\u9488\u7684\u4f4d\u7f6e<\/h1>\n\n\n\n
\u6587\u4ef6\u5185\u90e8\u53ef\u4ee5\u7406\u89e3\u4e3a\uff1a<\/p>\n\n\n\n
H e l l o \\n W o r l d\n\u2191\n\u5f53\u524d\u4f4d\u7f6e<\/code><\/pre>\n\n\n\n
\u6bcf\u8bfb\u53d6\u4e00\u6b21\uff1a<\/p>\n\n\n\n
<\/a>fgetc(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f4d\u7f6e\u5c31\u4f1a\u5411\u540e\u79fb\u52a8\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
\u7b2c\u4e00\u6b21\n\u2193\nH e l l o\n\u2191\n\n\u7b2c\u4e8c\u6b21\n\u2193\nH e l l o\n  \u2191<\/code><\/pre>\n\n\n\n
\u8fd9\u5c31\u662f\u6240\u8c13\uff1a<\/p>\n\n\n\n
\u6587\u4ef6\u4f4d\u7f6e\u6307\u793a\u5668\u3002<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e8c\u3001rewind<\/h1>\n\n\n\n
\u53ef\u4ee5\u628a\u6587\u4ef6\u4f4d\u7f6e\u91cd\u65b0\u653e\u56de\u5f00\u5934\uff1a<\/p>\n\n\n\n
<\/a>rewind(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>fgetc(<\/span>fp);<\/span><\/span>\n<\/a>fgetc(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>rewind(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>fgetc(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u524d\u4e24\u6b21\u8bfb\u53d6\u4ee5\u540e\u4f4d\u7f6e\u5df2\u7ecf\u5411\u540e\u79fb\u52a8\u3002<\/p>\n\n\n\n
rewind()<\/code> \u540e\uff1a<\/p>\n\n\n\n
\u56de\u5230\u6587\u4ef6\u5f00\u5934<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e09\u3001ftell<\/h1>\n\n\n\n
\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6587\u4ef6\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n
<\/a>ftell(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>long<\/span> pos =<\/span> ftell(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>printf(<\/span>\"<\/span>%ld\\n<\/span>\"<\/span>,<\/span> pos);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd4\u56de\u5f53\u524d\u6587\u4ef6\u4f4d\u7f6e\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
\u521a\u6253\u5f00\n\u2193\n0\n\n\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\n\u2193\n1\n\n\u518d\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\n\u2193\n2<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u56db\u3001fseek<\/h1>\n\n\n\n
\u53ef\u4ee5\u76f4\u63a5\u79fb\u52a8\u6587\u4ef6\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n
<\/a>fseek()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u57fa\u672c\u5f62\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>fseek(<\/span>fp,<\/span> offset,<\/span> origin);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u5e38\u89c1\uff1a<\/p>\n\n\n\n
<\/a>SEEK_SET<\/span>\n<\/a>SEEK_CUR<\/span>\n<\/a>SEEK_END<\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>fseek(<\/span>fp,<\/span> 0<\/span>,<\/span> SEEK_SET);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8868\u793a\uff1a<\/p>\n\n\n\n
\u79fb\u52a8\u5230\u6587\u4ef6\u5f00\u5934<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e94\u3001\u6587\u4ef6\u7ed3\u5c3e<\/h1>\n\n\n\n
\u5e38\u89c1\u5224\u65ad\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>while<\/span> ((<\/span>c =<\/span> fgetc(<\/span>fp))<\/span> !=<\/span> EOF)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8fd9\u91cc\uff1a<\/p>\n\n\n\n
EOF<\/code><\/pre>\n\n\n\n
\u8868\u793a\uff1a<\/p>\n\n\n\n
End Of File<\/strong><\/p>\n\n\n\n
\u4e5f\u5c31\u662f\u6587\u4ef6\u7ed3\u675f\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a<\/p>\n\n\n\n
EOF<\/code> \u4e0d\u662f\u4e00\u4e2a\u771f\u6b63\u5199\u8fdb\u6587\u4ef6\u91cc\u7684\u666e\u901a\u5b57\u7b26\u3002<\/p>\n\n\n\n
\u5b83\u662f\u8bfb\u53d6\u51fd\u6570\u7528\u6765\u8868\u793a\uff1a<\/p>\n\n\n\n
\u5df2\u7ecf\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\u4e86\u3002<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u516d\u3001\u4e8c\u8fdb\u5236\u6587\u4ef6<\/h1>\n\n\n\n
\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u4e3b\u8981\u64cd\u4f5c\uff1a<\/p>\n\n\n\n
\u6587\u672c\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
student.txt<\/code><\/pre>\n\n\n\n
\u4f46\u662f\u7a0b\u5e8f\u8fd8\u53ef\u4ee5\u4fdd\u5b58\uff1a<\/p>\n\n\n\n
\u4e8c\u8fdb\u5236\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
student.dat\nsave.dat\ndata.bin<\/code><\/pre>\n\n\n\n
\u4f7f\u7528\uff1a<\/p>\n\n\n\n
rb\nwb\nab<\/code><\/pre>\n\n\n\n
\u7b49\u6a21\u5f0f\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e03\u3001fwrite<\/h1>\n\n\n\n
\u4e8c\u8fdb\u5236\u5199\u5165\u4e3b\u8981\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fwrite()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u683c\u5f0f\uff1a<\/p>\n\n\n\n
<\/a>fwrite(<\/span>\u6570\u636e\u5730\u5740,<\/span> \u6bcf\u4e2a\u5143\u7d20\u5927\u5c0f,<\/span> \u5143\u7d20\u6570\u91cf,<\/span> \u6587\u4ef6\u6307\u9488);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>int<\/span> a =<\/span> 100<\/span>;<\/span><\/span>\n<\/a><\/span>\n<\/a>fwrite(&<\/span>a,<\/span> sizeof<\/span>(<\/span>int<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8868\u793a\uff1a<\/p>\n\n\n\n
\u628a a \u7684\u5185\u5b58\u6570\u636e\n\u2193\n\u5199\u5165\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u516b\u3001fread<\/h1>\n\n\n\n
\u8bfb\u53d6\u5bf9\u5e94\uff1a<\/p>\n\n\n\n
<\/a>fread()<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>int<\/span> a;<\/span><\/span>\n<\/a><\/span>\n<\/a>fread(&<\/span>a,<\/span> sizeof<\/span>(<\/span>int<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8868\u793a\uff1a<\/p>\n\n\n\n
\u6587\u4ef6\u4e2d\u7684\u4e8c\u8fdb\u5236\u6570\u636e\n\u2193\n\u8bfb\u53d6\u5230 a<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e8c\u5341\u4e5d\u3001fwrite + fread<\/h1>\n\n\n\n
\u5b8c\u6574\u4f8b\u5b50\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"data.bin\"<\/span>,<\/span> \"wb\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    int<\/span> a =<\/span> 100<\/span>;<\/span><\/span>\n<\/a>    double<\/span> b =<\/span> 3.14<\/span>;<\/span><\/span>\n<\/a><\/span>\n<\/a>    fwrite(&<\/span>a,<\/span> sizeof<\/span>(<\/span>int<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a>    fwrite(&<\/span>b,<\/span> sizeof<\/span>(<\/span>double<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"data.bin\"<\/span>,<\/span> \"rb\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    int<\/span> a;<\/span><\/span>\n<\/a>    double<\/span> b;<\/span><\/span>\n<\/a><\/span>\n<\/a>    fread(&<\/span>a,<\/span> sizeof<\/span>(<\/span>int<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a>    fread(&<\/span>b,<\/span> sizeof<\/span>(<\/span>double<\/span>),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    printf(<\/span>\"<\/span>%d\\n<\/span>\"<\/span>,<\/span> a);<\/span><\/span>\n<\/a>    printf(<\/span>\"<\/span>%.2f\\n<\/span>\"<\/span>,<\/span> b);<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u3001\u7ed3\u6784\u4f53\u5199\u5165\u6587\u4ef6<\/h1>\n\n\n\n
\u73b0\u5728\u628a\u4e0a\u4e00\u7ae0\u7684\uff1a<\/p>\n\n\n\n
\u7ed3\u6784\u4f53<\/code><\/pre>\n\n\n\n
\u548c\u672c\u7ae0\uff1a<\/p>\n\n\n\n
\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u7ed3\u5408\u8d77\u6765\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>typedef<\/span> struct<\/span> {<\/span><\/span>\n<\/a>    char<\/span> name[<\/span>50<\/span>];<\/span><\/span>\n<\/a>    int<\/span> age;<\/span><\/span>\n<\/a>    double<\/span> score;<\/span><\/span>\n<\/a>}<\/span> Student;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u521b\u5efa\uff1a<\/p>\n\n\n\n
<\/a>Student s =<\/span> {<\/span>\"Alice\"<\/span>,<\/span> 18<\/span>,<\/span> 95.5<\/span>};<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u76f4\u63a5\u5199\u5165\uff1a<\/p>\n\n\n\n
<\/a>fwrite(&<\/span>s,<\/span> sizeof<\/span>(<\/span>Student),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e00\u3001\u7ed3\u6784\u4f53\u8bfb\u53d6\u6587\u4ef6<\/h1>\n\n\n\n
\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
<\/a>Student s;<\/span><\/span>\n<\/a><\/span>\n<\/a>fread(&<\/span>s,<\/span> sizeof<\/span>(<\/span>Student),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u5b8c\u6574\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>typedef<\/span> struct<\/span> {<\/span><\/span>\n<\/a>    char<\/span> name[<\/span>50<\/span>];<\/span><\/span>\n<\/a>    int<\/span> age;<\/span><\/span>\n<\/a>    double<\/span> score;<\/span><\/span>\n<\/a>}<\/span> Student;<\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    Student s =<\/span> {<\/span>\"Alice\"<\/span>,<\/span> 18<\/span>,<\/span> 95.5<\/span>};<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"student.dat\"<\/span>,<\/span> \"wb\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fwrite(&<\/span>s,<\/span> sizeof<\/span>(<\/span>Student),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
<\/a>#include <\/span><stdio.h><\/span><\/span>\n<\/a><\/span>\n<\/a>typedef<\/span> struct<\/span> {<\/span><\/span>\n<\/a>    char<\/span> name[<\/span>50<\/span>];<\/span><\/span>\n<\/a>    int<\/span> age;<\/span><\/span>\n<\/a>    double<\/span> score;<\/span><\/span>\n<\/a>}<\/span> Student;<\/span><\/span>\n<\/a><\/span>\n<\/a>int<\/span> main()<\/span> {<\/span><\/span>\n<\/a><\/span>\n<\/a>    Student s;<\/span><\/span>\n<\/a><\/span>\n<\/a>    FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"student.dat\"<\/span>,<\/span> \"rb\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>    if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>        return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>    }<\/span><\/span>\n<\/a><\/span>\n<\/a>    fread(&<\/span>s,<\/span> sizeof<\/span>(<\/span>Student),<\/span> 1<\/span>,<\/span> fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    printf(<\/span>\"\u59d3\u540d: <\/span>%s\\n<\/span>\"<\/span>,<\/span> s.<\/span>name);<\/span><\/span>\n<\/a>    printf(<\/span>\"\u5e74\u9f84: <\/span>%d\\n<\/span>\"<\/span>,<\/span> s.<\/span>age);<\/span><\/span>\n<\/a>    printf(<\/span>\"\u6210\u7ee9: <\/span>%.2f\\n<\/span>\"<\/span>,<\/span> s.<\/span>score);<\/span><\/span>\n<\/a><\/span>\n<\/a>    fclose(<\/span>fp);<\/span><\/span>\n<\/a><\/span>\n<\/a>    return<\/span> 0<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e8c\u3001\u7ed3\u6784\u4f53\u6570\u7ec4\u5199\u5165\u6587\u4ef6<\/h1>\n\n\n\n
\u53ef\u4ee5\u4e00\u6b21\u5199\u591a\u4e2a\uff1a<\/p>\n\n\n\n
<\/a>Student students[<\/span>3<\/span>]<\/span> =<\/span> {<\/span><\/span>\n<\/a>    {<\/span>\"Alice\"<\/span>,<\/span> 18<\/span>,<\/span> 95.5<\/span>},<\/span><\/span>\n<\/a>    {<\/span>\"Bob\"<\/span>,<\/span> 19<\/span>,<\/span> 88.0<\/span>},<\/span><\/span>\n<\/a>    {<\/span>\"Charlie\"<\/span>,<\/span> 18<\/span>,<\/span> 92.5<\/span>}<\/span><\/span>\n<\/a>};<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\uff1a<\/p>\n\n\n\n
<\/a>fwrite(<\/span><\/span>\n<\/a>    students,<\/span><\/span>\n<\/a>    sizeof<\/span>(<\/span>Student),<\/span><\/span>\n<\/a>    3<\/span>,<\/span><\/span>\n<\/a>    fp<\/span>\n<\/a>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n
students\n\u2193\nStudent\nStudent\nStudent\n\u2193\n\u4e00\u6b21\u5199\u5165 3 \u4e2a<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e09\u3001\u7ed3\u6784\u4f53\u6570\u7ec4\u8bfb\u53d6<\/h1>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>Student students[<\/span>3<\/span>];<\/span><\/span>\n<\/a><\/span>\n<\/a>fread(<\/span><\/span>\n<\/a>    students,<\/span><\/span>\n<\/a>    sizeof<\/span>(<\/span>Student),<\/span><\/span>\n<\/a>    3<\/span>,<\/span><\/span>\n<\/a>    fp<\/span>\n<\/a>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\uff1a<\/p>\n\n\n\n
<\/a>for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> 3<\/span>;<\/span> i++)<\/span> {<\/span><\/span>\n<\/a>    printf(<\/span><\/span>\n<\/a>        \"<\/span>%s<\/span> <\/span>%d<\/span> <\/span>%.2f\\n<\/span>\"<\/span>,<\/span><\/span>\n<\/a>        students[<\/span>i].<\/span>name,<\/span><\/span>\n<\/a>        students[<\/span>i].<\/span>age,<\/span><\/span>\n<\/a>        students[<\/span>i].<\/span>score<\/span>\n<\/a>    );<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u56db\u3001\u52a8\u6001\u5185\u5b58 + \u6587\u4ef6 +\n\u7ed3\u6784\u4f53<\/h1>\n\n\n\n
\u73b0\u5728\u628a\u524d\u4e09\u7ae0\u5168\u90e8\u8fde\u63a5\u8d77\u6765\u3002<\/p>\n\n\n\n
\u7ed3\u6784\u4f53\n+\n\u52a8\u6001\u5185\u5b58\n+\n\u6587\u4ef6<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>Student *<\/span>students =<\/span><\/span>\n<\/a>    malloc(<\/span>sizeof<\/span>(<\/span>Student)<\/span> *<\/span> n);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7528\u6237\u8f93\u5165 n<\/code>\u3002<\/p>\n\n\n\n
\u7136\u540e\uff1a<\/p>\n\n\n\n
malloc\n\u2193\n\u521b\u5efa n \u4e2a Student\n\u2193\n\u8f93\u5165\u6570\u636e\n\u2193\nfwrite\n\u2193\n\u4fdd\u5b58\u6587\u4ef6\n\u2193\nfree<\/code><\/pre>\n\n\n\n
\u8bfb\u53d6\u65f6\uff1a<\/p>\n\n\n\n
fopen\n\u2193\n\u786e\u5b9a\u6570\u636e\u6570\u91cf\n\u2193\nmalloc\n\u2193\nfread\n\u2193\n\u4f7f\u7528\n\u2193\nfree\n\u2193\nfclose<\/code><\/pre>\n\n\n\n
\u8fd9\u5df2\u7ecf\u5f00\u59cb\u63a5\u8fd1\u771f\u6b63\u7684\u8f6f\u4ef6\u6570\u636e\u5b58\u50a8\u4e86\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e94\u3001\u6587\u672c\u6587\u4ef6\u548c\u4e8c\u8fdb\u5236\u6587\u4ef6<\/h1>\n\n\n\n
\u4e24\u79cd\u65b9\u5f0f\u5404\u6709\u7279\u70b9\u3002<\/p>\n\n\n\n
\u6587\u672c\u6587\u4ef6<\/h2>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
student.txt<\/code><\/pre>\n\n\n\n
\u5185\u5bb9\uff1a<\/p>\n\n\n\n
Alice 18 95.5\nBob 19 88.0<\/code><\/pre>\n\n\n\n
\u7279\u70b9\uff1a<\/p>\n\n\n\n
\u4eba\u53ef\u4ee5\u76f4\u63a5\u6253\u5f00\u67e5\u770b\n\u65b9\u4fbf\u8c03\u8bd5\n\u8de8\u8bed\u8a00\u5904\u7406\u6bd4\u8f83\u65b9\u4fbf<\/code><\/pre>\n\n\n\n
\u5e38\u7528\uff1a<\/p>\n\n\n\n
<\/a>fprintf<\/span>\n<\/a>fscanf<\/span>\n<\/a>fgets<\/span>\n<\/a>fputs<\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e8c\u8fdb\u5236\u6587\u4ef6<\/h2>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
student.dat<\/code><\/pre>\n\n\n\n
\u5185\u5bb9\u662f\u4e8c\u8fdb\u5236\u6570\u636e\u3002<\/p>\n\n\n\n
\u7279\u70b9\uff1a<\/p>\n\n\n\n
\u4eba\u4e0d\u5bb9\u6613\u76f4\u63a5\u9605\u8bfb\n\u9002\u5408\u7a0b\u5e8f\u76f4\u63a5\u8bfb\u5199\n\u53ef\u4ee5\u76f4\u63a5\u4fdd\u5b58\u7ed3\u6784\u4f53\u7684\u5b57\u8282\u6570\u636e<\/code><\/pre>\n\n\n\n
\u5e38\u7528\uff1a<\/p>\n\n\n\n
<\/a>fread<\/span>\n<\/a>fwrite<\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u516d\u3001\u6587\u4ef6\u64cd\u4f5c\u5b89\u5168\u95ee\u9898<\/h1>\n\n\n\n
1. fopen \u5931\u8d25<\/h2>\n\n\n\n
\u4e00\u5b9a\u8981\u68c0\u67e5\uff1a<\/p>\n\n\n\n
<\/a>FILE<\/span> *<\/span>fp =<\/span> fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"r\"<\/span>);<\/span><\/span>\n<\/a><\/span>\n<\/a>if<\/span> (<\/span>fp ==<\/span> NULL)<\/span> {<\/span><\/span>\n<\/a>    return<\/span> 1<\/span>;<\/span><\/span>\n<\/a>}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
2. \u6587\u4ef6\u6ca1\u5173\u95ed<\/h2>\n\n\n\n
\u4f7f\u7528\u5b8c\uff1a<\/p>\n\n\n\n
<\/a>fclose(<\/span>fp);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
3. \u8986\u76d6\u539f\u6587\u4ef6<\/h2>\n\n\n\n
\u6ce8\u610f\uff1a<\/p>\n\n\n\n
<\/a>fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"w\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4f1a\u6e05\u7a7a\u539f\u6587\u4ef6\u3002<\/p>\n\n\n\n
\u5982\u679c\u53ea\u60f3\u5728\u540e\u9762\u6dfb\u52a0\u5185\u5bb9\uff1a<\/p>\n\n\n\n
<\/a>fopen(<\/span>\"test.txt\"<\/span>,<\/span> \"a\"<\/span>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
4. scanf \/ fscanf \u5b57\u7b26\u4e32\u957f\u5ea6<\/h2>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
<\/a>char<\/span> name[<\/span>50<\/span>];<\/span><\/span>\n<\/a><\/span>\n<\/a>fscanf(<\/span>fp,<\/span> \"<\/span>%49s<\/span>\"<\/span>,<\/span> name);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u9884\u7559\u4e00\u4e2a\u4f4d\u7f6e\u7ed9\uff1a<\/p>\n\n\n\n
\\0<\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u7b80\u5355\u7684\u7f13\u51b2\u533a\u8d8a\u754c\u95ee\u9898\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e03\u3001\u6587\u4ef6\u548c\u4f60\u7684\u8bfe\u7a0b\u8868\u9879\u76ee<\/h1>\n\n\n\n
\u4f60\u4e4b\u524d\u505a\u8fc7\u8bfe\u7a0b\u8868\u7a0b\u5e8f\u3002<\/p>\n\n\n\n
\u4e4b\u524d\u7684\u6570\u636e\u53ef\u80fd\u653e\u5728\uff1a<\/p>\n\n\n\n
<\/a>char<\/span> classname[<\/span>7<\/span>][<\/span>6<\/span>][<\/span>291<\/span>];<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7a0b\u5e8f\u5173\u95ed\u4e4b\u540e\uff1a<\/p>\n\n\n\n
\u6570\u636e\u6d88\u5931<\/code><\/pre>\n\n\n\n
\u73b0\u5728\u53ef\u4ee5\uff1a<\/p>\n\n\n\n
\u8bfe\u7a0b\u8868\n\u2193\n\u7ed3\u6784\u4f53\n\u2193\n\u52a8\u6001\u5185\u5b58\n\u2193\n\u6587\u4ef6\n\u2193\n\u6c38\u4e45\u4fdd\u5b58<\/code><\/pre>\n\n\n\n
\u4f8b\u5982\u8bbe\u8ba1\uff1a<\/p>\n\n\n\n
<\/a>typedef<\/span> struct<\/span> {<\/span><\/span>\n<\/a>    char<\/span> name[<\/span>100<\/span>];<\/span><\/span>\n<\/a>    char<\/span> teacher[<\/span>100<\/span>];<\/span><\/span>\n<\/a>    char<\/span> room[<\/span>100<\/span>];<\/span><\/span>\n<\/a>}<\/span> Course;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\uff1a<\/p>\n\n\n\n
<\/a>Course courses[<\/span>7<\/span>][<\/span>6<\/span>];<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u53ef\u4ee5\u4fdd\u5b58\u5230\u6587\u4ef6\u3002<\/p>\n\n\n\n
\u751a\u81f3\u4ee5\u540e\uff1a<\/p>\n\n\n\n
C \u7a0b\u5e8f\n\u2193\n\u751f\u6210 JSON\n\u2193\n\u7f51\u9875 \/ \u624b\u673a App\n\u2193\n\u8bfb\u53d6 JSON<\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u5c31\u548c\u4f60\u4e4b\u524d\u505a\u7684\u8bfe\u7a0b\u8868\u9879\u76ee\u771f\u6b63\u8fde\u63a5\u8d77\u6765\u4e86\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u516b\u3001\u6587\u4ef6\u64cd\u4f5c\u7684\u5b8c\u6574\u6d41\u7a0b<\/h1>\n\n\n\n
\u6700\u6838\u5fc3\uff1a<\/p>\n\n\n\n
                \u6587\u4ef6\n                 \u2502\n          \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n          \u2193             \u2193\n        \u8bfb\u53d6            \u5199\u5165\n          \u2502             \u2502\n        fopen          fopen\n          \u2502             \u2502\n        fread          fwrite\n          \u2502             \u2502\n          \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n                 \u2193\n               fclose<\/code><\/pre>\n\n\n\n
\u6587\u672c\u6587\u4ef6\uff1a<\/p>\n\n\n\n
fopen\n \u2193\nfgets \/ fscanf\n \u2193\n\u5904\u7406\u6570\u636e\n \u2193\nfprintf \/ fputs\n \u2193\nfclose<\/code><\/pre>\n\n\n\n
\u4e8c\u8fdb\u5236\u6587\u4ef6\uff1a<\/p>\n\n\n\n
fopen\n \u2193\nfread \/ fwrite\n \u2193\n\u5904\u7406\u6570\u636e\n \u2193\nfclose<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e09\u5341\u4e5d\u3001\u672c\u7ae0\u6700\u91cd\u8981\u7684\u51fd\u6570<\/h1>\n\n\n\n
\u5efa\u8bae\u5148\u8bb0\u4f4f\u8fd9\u51e0\u4e2a\uff1a<\/p>\n\n\n\n
fopen\nfclose\nfprintf\nfscanf\nfgets\nfputs\nfread\nfwrite<\/code><\/pre>\n\n\n\n
\u7136\u540e\u518d\u5b66\u4e60\uff1a<\/p>\n\n\n\n
fgetc\nfputc\nfseek\nftell\nrewind<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u56db\u5341\u3001\u77e5\u8bc6\u8054\u7cfb<\/h1>\n\n\n\n
\u5230\u8fd9\u91cc\uff0c\u4f60\u5df2\u7ecf\u53ef\u4ee5\u628a\u524d\u9762\u7684\u77e5\u8bc6\u4e32\u8d77\u6765\uff1a<\/p>\n\n\n\n
\u6570\u7ec4\n \u2193\n\u53ef\u4ee5\u4fdd\u5b58\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\n\n\u7ed3\u6784\u4f53\n \u2193\n\u628a\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u7ec4\u5408\u8d77\u6765\n\n\u6307\u9488\n \u2193\n\u4fdd\u5b58\u5730\u5740\n\n\u52a8\u6001\u5185\u5b58\n \u2193\n\u8fd0\u884c\u65f6\u7533\u8bf7\u7a7a\u95f4\n\n\u6587\u4ef6\n \u2193\n\u628a\u6570\u636e\u4fdd\u5b58\u5230\u78c1\u76d8<\/code><\/pre>\n\n\n\n
\u6700\u7ec8\u5f62\u6210\uff1a<\/p>\n\n\n\n
\u7ed3\u6784\u4f53\n   +\n\u6307\u9488\n   +\nmalloc\/free\n   +\nfread\/fwrite\n   \u2193\n\u53ef\u4ee5\u4fdd\u5b58\u590d\u6742\u7684\u6570\u636e<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u56db\u5341\u4e00\u3001\u7ec3\u4e60<\/h1>\n\n\n\n
\u7ec3\u4e60 1<\/h3>\n\n\n\n
\u521b\u5efa\uff1a<\/p>\n\n\n\n
test.txt<\/code><\/pre>\n\n\n\n
\u5199\u5165\uff1a<\/p>\n\n\n\n
Hello C<\/code><\/pre>\n\n\n\n
\u8981\u6c42\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fopen<\/span>\n<\/a>fputs<\/span>\n<\/a>fclose<\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 2<\/h3>\n\n\n\n
\u8bfb\u53d6\uff1a<\/p>\n\n\n\n
test.txt<\/code><\/pre>\n\n\n\n
\u9010\u884c\u8f93\u51fa\u3002<\/p>\n\n\n\n
\u8981\u6c42\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fgets<\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 3<\/h3>\n\n\n\n
\u521b\u5efa\u4e00\u4e2a\u5b66\u751f\uff1a<\/p>\n\n\n\n
<\/a>Student s;<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u628a\uff1a<\/p>\n\n\n\n
\u59d3\u540d\n\u5e74\u9f84\n\u6210\u7ee9<\/code><\/pre>\n\n\n\n
\u4f7f\u7528 fprintf()<\/code> \u4fdd\u5b58\u5230\u6587\u672c\u6587\u4ef6\u3002<\/p>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 4<\/h3>\n\n\n\n
\u4ece\u6587\u672c\u6587\u4ef6\u4e2d\u8bfb\u53d6\u591a\u4e2a\u5b66\u751f\u3002<\/p>\n\n\n\n
\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fscanf<\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\u653e\u5165\uff1a<\/p>\n\n\n\n
<\/a>Student students[<\/span>100<\/span>];<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 5<\/h3>\n\n\n\n
\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fwrite<\/span><\/code><\/pre><\/div>\n\n\n\n
\u628a\u4e00\u4e2a Student<\/code> \u4fdd\u5b58\u5230\uff1a<\/p>\n\n\n\n
student.dat<\/code><\/pre>\n\n\n\n
\u518d\u4f7f\u7528\uff1a<\/p>\n\n\n\n
<\/a>fread<\/span><\/code><\/pre><\/div>\n\n\n\n
\u8bfb\u53d6\u56de\u6765\u3002<\/p>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 6<\/h3>\n\n\n\n
\u521b\u5efa 5 \u4e2a\u5b66\u751f\uff1a<\/p>\n\n\n\n
<\/a>Student students[<\/span>5<\/span>];<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u4e00\u6b21\u6027\u5199\u5165\uff1a<\/p>\n\n\n\n
<\/a>fwrite(<\/span><\/span>\n<\/a>    students,<\/span><\/span>\n<\/a>    sizeof<\/span>(<\/span>Student),<\/span><\/span>\n<\/a>    5<\/span>,<\/span><\/span>\n<\/a>    fp<\/span>\n<\/a>);<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
\u7136\u540e\u518d\u4e00\u6b21\u6027\u8bfb\u53d6\u3002<\/p>\n\n\n\n
\n\n\n\n
\u7ec3\u4e60 7<\/h3>\n\n\n\n
\u7efc\u5408\u7ec3\u4e60\uff1a<\/p>\n\n\n\n
\u8ba9\u7528\u6237\u8f93\u5165\uff1a<\/p>\n\n\n\n
\u5b66\u751f\u6570\u91cf<\/code><\/pre>\n\n\n\n
\u7136\u540e\uff1a<\/p>\n\n\n\n
\u8f93\u5165 n\n\u2193\nmalloc\n\u2193\n\u521b\u5efa n \u4e2a Student\n\u2193\n\u8f93\u5165\u5b66\u751f\u4fe1\u606f\n\u2193\n\u4fdd\u5b58\u5230\u6587\u4ef6\n\u2193\nfree<\/code><\/pre>\n\n\n\n
\u91cd\u65b0\u542f\u52a8\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n
\u8bfb\u53d6\u6587\u4ef6\n\u2193\nmalloc\n\u2193\n\u8bfb\u53d6\u6240\u6709\u5b66\u751f\n\u2193\n\u8f93\u51fa\n\u2193\nfree<\/code><\/pre>\n\n\n\n
\n\n\n\n
<\/h1>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u9762\u6211\u4eec\u5b66\u4e60\u4e86\uff1a \u8fd9\u4e9b\u6570\u636e\u9ed8\u8ba4\u90fd\u5b58\u5728\u4e8e\uff1a \u5185\u5b58\u4e2d\u3002 \u4f8b\u5982\uff1a int a = 10; \u7a0b\u5e8f\u8fd0\u884c\u65f6\uff1a \u4f46\u662f\u7a0b\u5e8f\u7ed3\u675f\u4ee5\u540e\uff1a \u5982\u679c\u5e0c\u671b\u6570\u636e …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-94","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/posts\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=94"}],"version-history":[{"count":1,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/posts\/94\/revisions"}],"predecessor-version":[{"id":95,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=\/wp\/v2\/posts\/94\/revisions\/95"}],"wp:attachment":[{"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/decagrammaton.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}