习题2-1 求整数均值（10 分）water

#include<stdio.h>

int main()
{
    int n1,n2,n3,n4;
    int Sum;
    double Ave;

    scanf("%d%d%d%d",&n1,&n2,&n3,&n4);
    Sum=n1+n2+n3+n4;
    Ave=Sum/4.0;
    printf("Sum = %d; Average = %.1f",Sum,Ave);

    return 0;
}