习题2-1 求整数均值

#include<stdio.h>
int main() 
{
	int Sum, a, b, c, d;
	double Average;

	scanf("%d %d %d %d",&a,&b,&c,&d);

	Sum=a+b+c+d;
	Average=(a+b+c+d)/4.0;

	printf("Sum = %d; Average = %.1f", Sum, Average);

	return 0;
}