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rewind.c
Package: C语言精彩编程百例_源代码.rar [view]
Upload User: bjtelijie
Upload Date: 2010-01-01
Package Size: 87k
Code Size: 1k
Category:
Algorithm
Development Platform:
Visual C++
- # include <stdio.h>
- # include <stdlib.h>
- # include <string.h>
- void main()
- {
- char str[80];
- FILE *fp; /* 定义一个文件类型的指针 */
- /* 以写的方式打开文件test */
- if((fp=fopen("test.txt", "w"))==NULL)
- {
- printf("Cannot open file.n");
- exit(0);
- }
- do{
- printf("Please enter a string: n");
- gets(str);
- strcat(str, "n"); /* 增加一个新行 */
- fputs(str, fp);
- } while(*str!='n');
- /* 从文件中读出字符串,并将它们显示出来 */
- rewind(fp); /* 重置文件指针 */
- while(!feof(fp))
- {
- fgets(str, 79, fp);
- printf(str);
- }
- fclose(fp);
- }