请教:这两空填得对吗……?
#include <stdio.h>
main()
{
FILE *fp;long num=0;
if((fp=fopen("abc.dat",___"r"___))==NULL)
{ printf("Open error\n"); exit(0);}
while(___!feof(fp))
{___???___;num++}
printf("num=%ld\n",num);
fclose(fp);
}
第三个空填什么哈?望指教~~谢了~