![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260813062445-6a7d632d86b6a.png\")
<\/p>\n\u00a0\u00a0\u00a0 \u9898\u76ee：<\/p>\n
\u5c06\u8f93\u5165\u7684\u5c0f\u5199\u5b57\u7b26\u4e32\u5199\u5165\u78c1\u76d8\u6587\u4ef6，\u518d\u5c06\u521a\u5199\u5165\u78c1\u76d8\u6587\u4ef6\u7684\u5185\u5bb9\u8bfb\u51fa\u5e76\u4ee5\u5927\u5199\u5b57\u6bcd\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002<\/p>\n
\u6e90\u4ee3\u7801：<\/p>\n
#define _CRT_SECURE_NO_WARNINGS
\n#include <stdio.h>
\n#include <ctype.h><\/p>\n
int main()
\n{
\nchar file_content[50];
\nchar ch;
\nFILE* fp;<\/p>\n
fp = fopen("test_1.txt", "w+");<\/p>\n
printf("\u8bf7\u8f93\u5165\u6587\u4ef6\u5185\u5bb9: ");
\nfgets(file_content, 50, stdin);
\nfputs(file_content, fp);
\nrewind(fp);<\/p>\n
while ((ch = getc(fp)) != EOF)
\n{
\nputc(toupper(ch), stdout);
\n}<\/p>\n
fclose(fp);
\nreturn 0;
\n}<\/p>\n
\u6f14\u793a\u6548\u679c：<\/p>\n
<\/p>\n
\u00a0\u8bb2\u89e3：<\/p>\n
\u00a0\u00a0 \u00a0fgets(file_content, 50, stdin);
\n\u00a0\u00a0 \u00a0fputs(file_content, fp);<\/p>\n
\u00a0fgets\u8d1f\u8d23\u5c06\u5b57\u7b26\u4e32\u5b58\u50a8\u5230file_content\u6570\u7ec4\u4e2d\u3002fputs\u8d1f\u8d23\u5c06file_content\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u5230\u6587\u4ef6\u5f53\u4e2d\u53bb\u3002<\/p>\n
\u00a0\u00a0 \u00a0rewind(fp);<\/p>\n
rewind\u8d1f\u8d23\u5c06fp\u7684\u5149\u6807\u79fb\u52a8\u5230\u5f00\u5934（\u4e4b\u524dfile_content\u5b57\u7b26\u4e32\u8f93\u51fa\u5230\u6587\u4ef6\u65f6，\u5149\u6807\u5728\u6587\u4ef6\u7ed3\u5c3e）<\/p>\n
\u00a0 putc(toupper(ch), stdout);<\/p>\n
\u00a0toupper(ch)\u5148\u5c06ch\u7684\u5b57\u7b26\u8f6c\u6362\u4e3a\u5927\u5199\u5728\u8f93\u51fa\u5230\u7ec8\u7aef\u4e0a\u3002\u8fd9\u91cc\u8981\u660e\u767dch\u548c\u6587\u4ef6\u5f53\u4e2d\u7684\u5b57\u7b26\u4e0d\u53d8\u8fd8\u662f\u5c0f\u5199\u7684\u3002toupper(ch)\u53ea\u662f\u5c06\u53d6\u5f97ch\u5f97\u5b57\u7b26\u5e76\u5927\u5199\u5e76\u6ca1\u6709\u8d4b\u503c\u7ed9\u4efb\u4f55\u5f97\u5de6\u503c\u3002<\/p>\n
\u5982\u679c\u670b\u53cb\u4f60\u611f\u89c9\u6587\u7ae0\u7684\u5185\u5bb9\u5bf9\u4f60\u6709\u5e2e\u52a9，\u53ef\u4ee5\u70b9\u8d5e，\u5173\u6ce8\u6587\u7ae0\u548c\u4e13\u680f\u4ee5\u53ca\u5173\u6ce8\u6211\u54c8，\u563f\u563f\u563f\u6211\u4f1a\u5b9a\u671f\u66f4\u65b0\u6587\u7ae0\u7684，\u8c22\u8c22\u670b\u53cb\u4f60\u7684\u652f\u6301\u54c8<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260813062446-6a7d632e01dfc.gif\")
<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee：\u5c06\u8f93\u5165\u7684\u5c0f\u5199\u5b57\u7b26\u4e32\u5199\u5165\u78c1\u76d8\u6587\u4ef6，\u518d\u5c06\u521a\u5199\u5165\u78c1\u76d8\u6587\u4ef6\u7684\u5185\u5bb9\u8bfb\u51fa\u5e76\u4ee5\u5927\u5199\u5b57\u6bcd\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002\u6e90\u4ee3\u7801：#define _CRT_SECURE_NO_WARNINGS
\n#include
\n#include int main()
\n{
\nchar file_content[50];
\nchar ch;
\nFILE* fp;fp fopen(\\”test_1.txt\\”, \\”w\\”);printf(\\”\u8bf7\u8f93\u5165\u6587\u4ef6\u5185\u5bb9: <\/p>\n","protected":false},"author":2,"featured_media":94025,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174,190],"topic":[],"class_list":["post-94027","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-190"],"yoast_head":"\n