请问各路大神，为什么两种方法都不能读写文件
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *pf,*pn;
char ch;
if((pf=fopen("test.txt","r+"))==NULL)
{
printf("1.The file can not be open!!!\n");
exit(0);
}
printf("success\n");
if((pf=fopen("done.txt","w+"))==NULL)
{
printf("2.The file can not be open!!!\n");
exit(0);
}
printf("success\n");
/*第一种方法
while((ch=fgetc(pf))!=EOF)
{
printf("%c",ch);
fputc(ch,pn);
}
*/
while(!feof(pf))//第二种方法
{
ch = fgetc(pf);
fputc(ch,pn);
}
close(pf);
close(pn);
}
[解决办法]
都写成了pf了，第2个应该是pn的。
if((pf=fopen("test.txt","r+"))==NULL)
if((pf=fopen("done.txt","w+"))==NULL)
