为啥单个可以，管道就不行了

Question

#include<stdio.h>

int main()

{

   int s,count;

   scanf("%d %d",&s,&count);

   float avg;

   avg = s / count;

   printf("The average value is %.3f\n",avg);

   return 0;

}

#include<stdio.h>

int main()

{

    printf("Input some int value (end by 0):\n");

    int i,s=0,count=0;

    int flag=1;

    while(flag){

        scanf("%d",&i);

        if(i == 0) break;

        s+=i;

        count++;

    }

    printf("%d %d\n",s,count);

    return 0;

}

Answer 1

什么管道？