C语言与管道

int main()
{
int s;
int n;
float avg;

scanf("%d,%d",&s,&n);   //特别注意的地方

// scanf("%d",&n);

avg=s/n;
printf("avg is %f \n",avg);

return 0;
}

#include <stdio.h>

int main()
{
int i;
int n=0;
int s=0;
while(1)
{
scanf("%d",&i);
if(i==0)
{
break;
}
n++;
s+=i;
}
printf("%d,%d\n",s,n);
return 0;
}

./input.out | ./avg.out