while(scanf("%d",&n)!=EOF);和 while(~scanf("%d%d\n",&a,&b)如何让他停下来

while(scanf("%d",&n)!=EOF);和 while(~scanf("%d%d\n",&a,&b)如何让他停下来

while后写getchar!＝'\n'
意思是当输入回车时跳出循环