#include <stdio.h>
int main()
{
    FILE *fp1,*fp2;
    char str[128];
    if ((fp1=fopen("test1.txt","r"))==NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    if ((fp2=fopen("test2.txt","w"))==NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    while (fgets(str,128,fp1)>0)
    {
        fputs(str,fp2);
        printf("%s",str);
    }
    fclose(fp1);
    fclose(fp2);
    return 0;
}

[此贴子已经被作者于2015-11-21 12:24编辑过]

有没有发现错误的

C程序就是检测出错误了呢

提示说是exit出错了