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请教一下用C编怎么判断结束?
if(EOF==scanf(%d,&pairs))
break;
貌似不行啊
#include<stdio.h>
int main()
{
double xpos[1000],ypos[1000];
int i;
int pairs;
while(1)
{
scanf("%d",&pairs);
if(EOF==pairs)
break;
for(i=0;i<pairs;i++)
{
scanf("%lf",&xpos[i]);
scanf("%lf",&ypos[i]);
}
printf("%d ",pairs);
for(i=0;i<pairs-1;i++)
printf("%.6f %.6f ",(xpos[i]+xpos[i+1])/2,(ypos[i]+ypos[i+1])/2);
printf("%.6f %.6f\n",(xpos[i]+xpos[0])/2,(ypos[i]+ypos[0])/2);
}
}
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