求整数均值-526互联

#include<stdio.h>
int main(void){
int a[4];
int i,sum;
double average;
printf("输入4个整数:\n");
for(i=0;i<4;i++){
scanf("%d",&a[i]);
}
for(i=0,sum=0;i<4;i++){
sum=sum+a[i];
}
average=1.0*sum/4;
printf("sum=%d\n",sum);
printf("average=%.1lf",average);
return 0;
}