/*Program to show sum of 10 elements of array & show the average.*/
#include<stdio.h>
int main()
{
    int a[10],i,sum=0;
    float av;
    printf("enter elements of an aaray: ");
    for(i=0; i<10; i++)
        scanf("%d",&a[i]);
    for(i=0; i<10; i++)
        sum=sum+a[i];
    printf("sum=%d",sum);
    av=sum/10;
    printf("average=%.2f",av);
    return 0;
}
Output:
enter elements of an array: 4
4
4
4
4
4
4
4
4
4
sum=40
    average=4.00