{"id":54092,"date":"2025-08-12T22:29:56","date_gmt":"2025-08-12T14:29:56","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/54092.html"},"modified":"2025-08-12T22:29:56","modified_gmt":"2025-08-12T14:29:56","slug":"%e5%b5%8c%e5%85%a5%e5%bc%8f%e5%ad%a6%e4%b9%a0-%e6%a0%87%e5%87%86io%ef%bc%88%e5%ae%8c%e6%95%b4%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/54092.html","title":{"rendered":"\u5d4c\u5165\u5f0f\u5b66\u4e60 \u6807\u51c6IO\uff08\u5b8c\u6574\u7248\uff09"},"content":{"rendered":"<h4>\u00a0<\/h4>\n<h4>C\u8bed\u8a00\u6807\u51c6IO\u6982\u8ff0<\/h4>\n<p>\u6807\u51c6IO&#xff08;Standard Input\/Output&#xff09;\u662fC\u8bed\u8a00\u4e2d\u7528\u4e8e\u5904\u7406\u6587\u4ef6\u548c\u6570\u636e\u6d41\u7684\u4e00\u7ec4\u51fd\u6570\u5e93&#xff0c;\u5b9a\u4e49\u5728&lt;stdio.h&gt;\u5934\u6587\u4ef6\u4e2d\u3002\u4e0e\u4f4e\u7ea7IO&#xff08;\u5982read\/write&#xff09;\u76f8\u6bd4&#xff0c;\u6807\u51c6IO\u63d0\u4f9b\u4e86\u7f13\u51b2\u673a\u5236&#xff0c;\u63d0\u9ad8\u4e86\u6570\u636e\u8bfb\u5199\u7684\u6548\u7387\u3002\u6807\u51c6IO\u7684\u6838\u5fc3\u662fFILE\u7ed3\u6784\u4f53\u6307\u9488&#xff0c;\u901a\u8fc7\u5b83\u64cd\u4f5c\u6587\u4ef6\u6d41\u3002<\/p>\n<hr \/>\n<h4>fopen\/fclose<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fopen&#xff1a;\u6253\u5f00\u6587\u4ef6\u5e76\u8fd4\u56de\u6587\u4ef6\u6307\u9488\u3002<\/li>\n<li>fclose&#xff1a;\u5173\u95ed\u6587\u4ef6\u5e76\u91ca\u653e\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>FILE *fopen(const char *filename, const char *mode);<br \/>\nint fclose(FILE *stream);<\/p>\n<p>\u53c2\u6570\u8bf4\u660e<\/p>\n<ul>\n<li>filename&#xff1a;\u6587\u4ef6\u8def\u5f84\u3002<\/li>\n<li>mode&#xff1a;\u6253\u5f00\u6a21\u5f0f&#xff08;\u5982&#034;r&#034;\u53ea\u8bfb&#xff0c;&#034;w&#034;\u5199\u5165&#xff0c;&#034;a&#034;\u8ffd\u52a0\u7b49&#xff09;\u3002<\/li>\n<li>stream&#xff1a;\u5df2\u6253\u5f00\u7684\u6587\u4ef6\u6307\u9488\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b<\/p>\n<p>FILE *fp &#061; fopen(&#034;test.txt&#034;, &#034;w&#034;);<br \/>\nif (fp &#061;&#061; NULL) {<br \/>\n    perror(&#034;Error opening file&#034;);<br \/>\n    return 1;<br \/>\n}<br \/>\nfclose(fp);<\/p>\n<hr \/>\n<h4>fgetc\/fputc<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fgetc&#xff1a;\u4ece\u6587\u4ef6\u6d41\u4e2d\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26\u3002<\/li>\n<li>fputc&#xff1a;\u5411\u6587\u4ef6\u6d41\u5199\u5165\u4e00\u4e2a\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>int fgetc(FILE *stream);<br \/>\nint fputc(int c, FILE *stream);<\/p>\n<p>\u793a\u4f8b<\/p>\n<p>FILE *fp &#061; fopen(&#034;test.txt&#034;, &#034;r&#034;);<br \/>\nint ch &#061; fgetc(fp); \/\/ \u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26<br \/>\nfputc(&#039;A&#039;, fp);     \/\/ \u5199\u5165\u5b57\u7b26&#039;A&#039;<\/p>\n<hr \/>\n<h4>fgets\/fputs<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fgets&#xff1a;\u4ece\u6587\u4ef6\u6d41\u8bfb\u53d6\u4e00\u884c\u5b57\u7b26\u4e32\u3002<\/li>\n<li>fputs&#xff1a;\u5411\u6587\u4ef6\u6d41\u5199\u5165\u5b57\u7b26\u4e32&#xff08;\u4e0d\u81ea\u52a8\u6dfb\u52a0\u6362\u884c\u7b26&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>char *fgets(char *str, int n, FILE *stream);<br \/>\nint fputs(const char *str, FILE *stream);<\/p>\n<p>\u53c2\u6570\u8bf4\u660e<\/p>\n<ul>\n<li>str&#xff1a;\u5b58\u50a8\u8bfb\u53d6\u6570\u636e\u7684\u7f13\u51b2\u533a\u3002<\/li>\n<li>n&#xff1a;\u6700\u591a\u8bfb\u53d6\u7684\u5b57\u7b26\u6570&#xff08;\u5305\u62ec\\\\0&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b<\/p>\n<p>char buffer[100];<br \/>\nfgets(buffer, 100, stdin); \/\/ \u4ece\u6807\u51c6\u8f93\u5165\u8bfb\u53d6<br \/>\nfputs(&#034;Hello&#034;, stdout);    \/\/ \u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa<\/p>\n<hr \/>\n<h4>fscanf\/fprintf<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fscanf&#xff1a;\u683c\u5f0f\u5316\u8f93\u5165&#xff08;\u7c7b\u4f3cscanf&#xff0c;\u4f46\u9488\u5bf9\u6587\u4ef6\u6d41&#xff09;\u3002<\/li>\n<li>fprintf&#xff1a;\u683c\u5f0f\u5316\u8f93\u51fa&#xff08;\u7c7b\u4f3cprintf&#xff0c;\u4f46\u9488\u5bf9\u6587\u4ef6\u6d41&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>int fscanf(FILE *stream, const char *format, &#8230;);<br \/>\nint fprintf(FILE *stream, const char *format, &#8230;);<\/p>\n<p>\u793a\u4f8b<\/p>\n<p>int num;<br \/>\nfscanf(fp, &#034;%d&#034;, &amp;num);       \/\/ \u4ece\u6587\u4ef6\u8bfb\u53d6\u6574\u6570<br \/>\nfprintf(fp, &#034;Number: %d&#034;, 42); \/\/ \u5199\u5165\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/p>\n<hr \/>\n<h4>fread\/fwrite<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fread&#xff1a;\u4ece\u6587\u4ef6\u6d41\u8bfb\u53d6\u4e8c\u8fdb\u5236\u6570\u636e\u5757\u3002<\/li>\n<li>fwrite&#xff1a;\u5411\u6587\u4ef6\u6d41\u5199\u5165\u4e8c\u8fdb\u5236\u6570\u636e\u5757\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>size_t fread(void *ptr, size_t size, size_t nmemb, FILE *stream);<br \/>\nsize_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);<\/p>\n<p>\u53c2\u6570\u8bf4\u660e<\/p>\n<ul>\n<li>ptr&#xff1a;\u6570\u636e\u7f13\u51b2\u533a\u6307\u9488\u3002<\/li>\n<li>size&#xff1a;\u6bcf\u4e2a\u6570\u636e\u9879\u7684\u5b57\u8282\u6570\u3002<\/li>\n<li>nmemb&#xff1a;\u8981\u8bfb\u5199\u7684\u6570\u636e\u9879\u6570\u91cf\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b<\/p>\n<p>int arr[5] &#061; {1, 2, 3, 4, 5};<br \/>\nfwrite(arr, sizeof(int), 5, fp); \/\/ \u5199\u5165\u6570\u7ec4<br \/>\nfread(arr, sizeof(int), 5, fp);  \/\/ \u8bfb\u53d6\u6570\u7ec4<\/p>\n<hr \/>\n<h4>fseek\/rewind\/ftell<\/h4>\n<p>\u529f\u80fd<\/p>\n<ul>\n<li>fseek&#xff1a;\u8bbe\u7f6e\u6587\u4ef6\u6d41\u7684\u4f4d\u7f6e\u6307\u9488\u3002<\/li>\n<li>rewind&#xff1a;\u91cd\u7f6e\u6587\u4ef6\u6307\u9488\u5230\u5f00\u5934\u3002<\/li>\n<li>ftell&#xff1a;\u8fd4\u56de\u5f53\u524d\u6587\u4ef6\u6307\u9488\u4f4d\u7f6e&#xff08;\u5b57\u8282\u504f\u79fb\u91cf&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u51fd\u6570\u539f\u578b<\/p>\n<p>int fseek(FILE *stream, long offset, int whence);<br \/>\nvoid rewind(FILE *stream);<br \/>\nlong ftell(FILE *stream);<\/p>\n<p>\u53c2\u6570\u8bf4\u660e<\/p>\n<ul>\n<li>offset&#xff1a;\u504f\u79fb\u91cf\u3002<\/li>\n<li>whence&#xff1a;\u57fa\u51c6\u4f4d\u7f6e&#xff08;SEEK_SET\u5f00\u5934&#xff0c;SEEK_CUR\u5f53\u524d\u4f4d\u7f6e&#xff0c;SEEK_END\u672b\u5c3e&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b<\/p>\n<p>fseek(fp, 10, SEEK_SET); \/\/ \u79fb\u52a8\u5230\u7b2c10\u5b57\u8282<br \/>\nrewind(fp);              \/\/ \u56de\u5230\u6587\u4ef6\u5f00\u5934<br \/>\nlong pos &#061; 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