#include
void main()
{
float a[3],sum;
int i;
for (i=0,sum=0;i<3;i++)
{
scanf("%f",&a[i]);
sum+=a[i];
}
printf("Sum:%f,Aver:%f",sum,sum/3);
}
#include"stdio.h"
void main()
{
int a,b,c,sum=0,ave
printf("please input three number:");
scanf("%d%d%d",&a,&b,&c);
sum=a+b+c;
ave=(a+b+c)/3;
printf("sum=%d,ave=%d",sum,ave)
}