{"id":3425,"date":"2025-04-01T23:35:59","date_gmt":"2025-04-01T15:35:59","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3425"},"modified":"2025-04-01T23:35:59","modified_gmt":"2025-04-01T15:35:59","slug":"c-%e8%af%ad%e8%a8%80%e8%be%93%e5%85%a5%e5%92%8c%e8%be%93%e5%87%ba%ef%bc%88i-o%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/01\/c-%e8%af%ad%e8%a8%80%e8%be%93%e5%85%a5%e5%92%8c%e8%be%93%e5%87%ba%ef%bc%88i-o%ef%bc%89\/","title":{"rendered":"C \u8bed\u8a00\u8f93\u5165\u548c\u8f93\u51fa\uff08I\/O\uff09"},"content":{"rendered":"\n

\u5728 C \u8bed\u8a00\u4e2d\uff0c\u8f93\u5165\u548c\u8f93\u51fa\uff08I\/O\uff09\u662f\u4e0e\u7528\u6237\u548c\u7a0b\u5e8f\u4e4b\u95f4\u4ea4\u4e92\u7684\u57fa\u672c\u65b9\u5f0f\u3002C \u63d0\u4f9b\u4e86\u6807\u51c6\u7684\u8f93\u5165\u8f93\u51fa\u5e93\uff08stdio.h<\/code>\uff09\u6765\u8fdb\u884c\u8fd9\u4e9b\u64cd\u4f5c\u3002\u4e0b\u9762\u662f C \u8bed\u8a00\u8f93\u5165\u8f93\u51fa\u7684\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n\n\n\n

1. \u6807\u51c6\u8f93\u5165\u4e0e\u8f93\u51fa\u5e93\uff1astdio.h<\/code><\/strong><\/h3>\n\n\n\n

C \u8bed\u8a00\u7684\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u51fd\u6570\u90fd\u4f4d\u4e8e stdio.h<\/code> \u5934\u6587\u4ef6\u4e2d\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528\u8f93\u5165\u8f93\u51fa\u529f\u80fd\u65f6\u9700\u8981\u5305\u542b\u8fd9\u4e2a\u5934\u6587\u4ef6\uff1a<\/p>\n\n\n\n

#include <stdio.h><\/code><\/pre>\n\n\n\n
\n\n\n\n
2. \u6807\u51c6\u8f93\u51fa\uff1aprintf()<\/code><\/strong><\/h3>\n\n\n\n
printf()<\/code> \u51fd\u6570\u7528\u4e8e\u683c\u5f0f\u5316\u8f93\u51fa\u6570\u636e\u5230\u6807\u51c6\u8f93\u51fa\u8bbe\u5907\uff08\u901a\u5e38\u662f\u5c4f\u5e55\uff09\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u4e3a\uff1a<\/p>\n\n\n\n
int printf(const char *format, ...);<\/code><\/pre>\n\n\n\n
    \n
  • format<\/code><\/strong>\uff1a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u63a7\u5236\u8f93\u51fa\u7684\u683c\u5f0f\u3002<\/li>\n\n\n\n
  • ...<\/code><\/strong>\uff1a\u53ef\u53d8\u53c2\u6570\uff0c\u6839\u636e\u683c\u5f0f\u5b57\u7b26\u4e32\u63d0\u4f9b\u5177\u4f53\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n
    \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
    #include <stdio.h>\n\nint main() {\n    int age = 25;\n    printf(\"Hello, World!\\n\");       \/\/ \u8f93\u51fa\u666e\u901a\u5b57\u7b26\u4e32\n    printf(\"Age: %d\\n\", age);         \/\/ \u8f93\u51fa\u6574\u578b\u6570\u636e\n    printf(\"Height: %.2f\\n\", 5.9);   \/\/ \u8f93\u51fa\u6d6e\u70b9\u6570\u636e\uff0c\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n
    \u8f93\u51fa\uff1a<\/strong><\/h4>\n\n\n\n
    Hello, World!\nAge: 25\nHeight: 5.90<\/code><\/pre>\n\n\n\n
    \u5e38\u89c1\u683c\u5f0f\u5316\u8f93\u51fa\u7b26\u53f7\uff1a<\/strong><\/h4>\n\n\n\n
      \n
    • %d<\/code>\uff1a\u8f93\u51fa\u6574\u6570\uff08\u5341\u8fdb\u5236\uff09<\/li>\n\n\n\n
    • %f<\/code>\uff1a\u8f93\u51fa\u6d6e\u70b9\u6570<\/li>\n\n\n\n
    • %c<\/code>\uff1a\u8f93\u51fa\u5b57\u7b26<\/li>\n\n\n\n
    • %s<\/code>\uff1a\u8f93\u51fa\u5b57\u7b26\u4e32<\/li>\n\n\n\n
    • %.2f<\/code>\uff1a\u8f93\u51fa\u6d6e\u70b9\u6570\uff0c\u4fdd\u7559 2 \u4f4d\u5c0f\u6570<\/li>\n\n\n\n
    • %x<\/code>\uff1a\u8f93\u51fa\u6574\u6570\u7684\u5341\u516d\u8fdb\u5236\u5f62\u5f0f<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      3. \u6807\u51c6\u8f93\u5165\uff1ascanf()<\/code><\/strong><\/h3>\n\n\n\n
      scanf()<\/code> \u51fd\u6570\u7528\u4e8e\u4ece\u6807\u51c6\u8f93\u5165\u8bbe\u5907\uff08\u901a\u5e38\u662f\u952e\u76d8\uff09\u8bfb\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5230\u53d8\u91cf\u4e2d\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u4e3a\uff1a<\/p>\n\n\n\n
      int scanf(const char *format, ...);<\/code><\/pre>\n\n\n\n
        \n
      • format<\/code><\/strong>\uff1a\u683c\u5f0f\u5b57\u7b26\u4e32\uff0c\u6307\u660e\u8f93\u5165\u6570\u636e\u7684\u7c7b\u578b\u548c\u683c\u5f0f\u3002<\/li>\n\n\n\n
      • ...<\/code><\/strong>\uff1a\u53d8\u91cf\u7684\u5730\u5740\uff0c\u7528\u6765\u5b58\u50a8\u8f93\u5165\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n
        \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
        #include <stdio.h>\n\nint main() {\n    int age;\n    float height;\n\n    printf(\"Enter your age: \");\n    scanf(\"%d\", &age);  \/\/ \u8bfb\u53d6\u6574\u6570\n    printf(\"Enter your height: \");\n    scanf(\"%f\", &height);  \/\/ \u8bfb\u53d6\u6d6e\u70b9\u6570\n\n    printf(\"Age: %d, Height: %.2f\\n\", age, height);\n    return 0;\n}<\/code><\/pre>\n\n\n\n
        \u8f93\u51fa\uff1a<\/strong><\/h4>\n\n\n\n
        Enter your age: 25\nEnter your height: 5.9\nAge: 25, Height: 5.90<\/code><\/pre>\n\n\n\n
        \u5e38\u89c1\u683c\u5f0f\u5316\u8f93\u5165\u7b26\u53f7\uff1a<\/strong><\/h4>\n\n\n\n
          \n
        • %d<\/code>\uff1a\u8bfb\u53d6\u6574\u6570<\/li>\n\n\n\n
        • %f<\/code>\uff1a\u8bfb\u53d6\u6d6e\u70b9\u6570<\/li>\n\n\n\n
        • %c<\/code>\uff1a\u8bfb\u53d6\u5b57\u7b26<\/li>\n\n\n\n
        • %s<\/code>\uff1a\u8bfb\u53d6\u5b57\u7b26\u4e32\uff08\u4f1a\u5ffd\u7565\u7a7a\u683c\uff09<\/li>\n<\/ul>\n\n\n\n
          \n\n\n\n
          4. \u8bfb\u53d6\u5b57\u7b26\u4e32\uff1agets()<\/code> \u548c fgets()<\/code><\/strong><\/h3>\n\n\n\n
          \u5728 C \u4e2d\uff0c\u8bfb\u53d6\u5b57\u7b26\u4e32\u7684\u5e38\u7528\u51fd\u6570\u6709 gets()<\/code> \u548c fgets()<\/code>\u3002\u7136\u800c\uff0cgets()<\/code> \u4e0d\u5b89\u5168\uff0c\u5bb9\u6613\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u95ee\u9898\uff0c\u56e0\u6b64\u63a8\u8350\u4f7f\u7528 fgets()<\/code>\u3002<\/p>\n\n\n\n
          4.1 gets()<\/code> (\u4e0d\u63a8\u8350\u4f7f\u7528)<\/strong><\/h4>\n\n\n\n
          char str[100];\ngets(str);  \/\/ \u8bfb\u53d6\u4e00\u884c\u8f93\u5165\uff0c\u76f4\u5230\u9047\u5230\u6362\u884c\u7b26\u6216 EOF<\/code><\/pre>\n\n\n\n
          gets()<\/code> \u51fd\u6570\u4f1a\u8bfb\u53d6\u6574\u884c\u8f93\u5165\uff0c\u5305\u62ec\u7a7a\u683c\uff0c\u76f4\u5230\u9047\u5230\u6362\u884c\u7b26\u3002\u5b83\u4e0d\u68c0\u67e5\u6570\u7ec4\u8fb9\u754c\uff0c\u5bb9\u6613\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u3002<\/p>\n\n\n\n
          4.2 fgets()<\/code> (\u63a8\u8350\u4f7f\u7528)<\/strong><\/h4>\n\n\n\n
          #include <stdio.h>\n\nchar str[100];\nfgets(str, sizeof(str), stdin);  \/\/ \u5b89\u5168\u5730\u8bfb\u53d6\u4e00\u884c\u8f93\u5165<\/code><\/pre>\n\n\n\n
          fgets()<\/code> \u66f4\u52a0\u5b89\u5168\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u6307\u5b9a\u6700\u5927\u8bfb\u53d6\u5b57\u7b26\u6570\uff0c\u4ece\u800c\u9632\u6b62\u7f13\u51b2\u533a\u6ea2\u51fa\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
          #include <stdio.h>\n\nint main() {\n    char name[50];\n\n    printf(\"Enter your name: \");\n    fgets(name, sizeof(name), stdin);  \/\/ \u4f7f\u7528 fgets \u8bfb\u53d6\u5b57\u7b26\u4e32\n\n    printf(\"Hello, %s\", name);\n    return 0;\n}<\/code><\/pre>\n\n\n\n
          \u8f93\u51fa\uff1a<\/strong><\/h4>\n\n\n\n
          Enter your name: John Doe\nHello, John Doe<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          5. \u8f93\u51fa\u5230\u6587\u4ef6\uff1afprintf()<\/code> \u548c fputs()<\/code><\/strong><\/h3>\n\n\n\n
          \u9664\u4e86\u6807\u51c6\u8f93\u51fa\uff0cC \u8fd8\u63d0\u4f9b\u4e86\u5c06\u6570\u636e\u8f93\u51fa\u5230\u6587\u4ef6\u7684\u529f\u80fd\u3002fprintf()<\/code> \u51fd\u6570\u7528\u4e8e\u5411\u6587\u4ef6\u8f93\u51fa\u683c\u5f0f\u5316\u6570\u636e\uff0cfputs()<\/code> \u7528\u4e8e\u8f93\u51fa\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
          5.1 fprintf()<\/code><\/strong><\/h4>\n\n\n\n
          FILE *f = fopen(\"output.txt\", \"w\");\nfprintf(f, \"Hello, File!\\n\");  \/\/ \u5411\u6587\u4ef6\u8f93\u51fa\nfclose(f);<\/code><\/pre>\n\n\n\n
          5.2 fputs()<\/code><\/strong><\/h4>\n\n\n\n
          FILE *f = fopen(\"output.txt\", \"w\");\nfputs(\"Hello, File!\\n\", f);  \/\/ \u5411\u6587\u4ef6\u8f93\u51fa\u5b57\u7b26\u4e32\nfclose(f);<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          6. \u4ece\u6587\u4ef6\u8bfb\u53d6\uff1afscanf()<\/code> \u548c fgets()<\/code><\/strong><\/h3>\n\n\n\n
          fscanf()<\/code> \u51fd\u6570\u4e0e scanf()<\/code> \u7c7b\u4f3c\uff0c\u4f46\u7528\u4e8e\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u3002fgets()<\/code> \u540c\u6837\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
          6.1 fscanf()<\/code><\/strong><\/h4>\n\n\n\n
          FILE *f = fopen(\"input.txt\", \"r\");\nint num;\nfscanf(f, \"%d\", &num);  \/\/ \u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u6570\nfclose(f);<\/code><\/pre>\n\n\n\n
          6.2 fgets()<\/code><\/strong><\/h4>\n\n\n\n
          FILE *f = fopen(\"input.txt\", \"r\");\nchar str[100];\nfgets(str, sizeof(str), f);  \/\/ \u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4e00\u884c\nfclose(f);<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          7. \u8f93\u5165\u8f93\u51fa\u7684\u9519\u8bef\u5904\u7406<\/strong><\/h3>\n\n\n\n
          \u5728\u4f7f\u7528 scanf()<\/code>\u3001printf()<\/code>\u3001fscanf()<\/code> \u7b49\u51fd\u6570\u65f6\uff0c\u901a\u5e38\u9700\u8981\u68c0\u67e5\u662f\u5426\u6210\u529f\u6267\u884c\u3002\u4f8b\u5982\uff0cscanf()<\/code> \u51fd\u6570\u4f1a\u8fd4\u56de\u6210\u529f\u8bfb\u53d6\u7684\u9879\u76ee\u6570\u91cf\uff0c\u5982\u679c\u4e0d\u7b49\u4e8e\u9884\u671f\u7684\u6570\u91cf\uff0c\u5219\u8f93\u5165\u5931\u8d25\u3002<\/p>\n\n\n\n
          \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
          #include <stdio.h>\n\nint main() {\n    int age;\n    printf(\"Enter your age: \");\n    if (scanf(\"%d\", &age) != 1) {\n        printf(\"Input error!\\n\");\n    } else {\n        printf(\"Your age is: %d\\n\", age);\n    }\n    return 0;\n}<\/code><\/pre>\n\n\n\n
          \n\n\n\n
          8. \u603b\u7ed3<\/strong><\/h3>\n\n\n\n
            \n
          • \u6807\u51c6\u8f93\u51fa<\/strong>\uff1a\u4f7f\u7528 printf()<\/code> \u51fd\u6570\u8f93\u51fa\u6570\u636e\u3002<\/li>\n\n\n\n
          • \u6807\u51c6\u8f93\u5165<\/strong>\uff1a\u4f7f\u7528 scanf()<\/code> \u51fd\u6570\u83b7\u53d6\u7528\u6237\u8f93\u5165\u3002<\/li>\n\n\n\n
          • \u5b57\u7b26\u4e32\u8f93\u5165\u8f93\u51fa<\/strong>\uff1a\u4f7f\u7528 gets()<\/code> \u6216 fgets()<\/code>\u3002<\/li>\n\n\n\n
          • \u6587\u4ef6\u8f93\u5165\u8f93\u51fa<\/strong>\uff1a\u4f7f\u7528 fprintf()<\/code>\u3001fscanf()<\/code>\u3001fputs()<\/code> \u548c fgets()<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
            \u901a\u8fc7\u5408\u7406\u4f7f\u7528\u8fd9\u4e9b\u8f93\u5165\u8f93\u51fa\u51fd\u6570\uff0c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u4e0e\u7528\u6237\u4ea4\u4e92\u6216\u5904\u7406\u6587\u4ef6\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u5728 C \u8bed\u8a00\u4e2d\uff0c\u8f93\u5165\u548c\u8f93\u51fa\uff08I\/O\uff09\u662f\u4e0e\u7528\u6237\u548c\u7a0b\u5e8f\u4e4b\u95f4\u4ea4\u4e92\u7684\u57fa\u672c\u65b9\u5f0f\u3002C \u63d0\u4f9b\u4e86\u6807\u51c6\u7684\u8f93\u5165\u8f93\u51fa\u5e93\uff08stdio. […]<\/p>\n","protected":false},"author":1,"featured_media":3426,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"class_list":["post-3425","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3425"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3425\/revisions"}],"predecessor-version":[{"id":3427,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3425\/revisions\/3427"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3426"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}