# C Program to find the sum and average of array Elements

Get array size n and n elements of array, then compute sum and average of the elements.

Sample Input 1:

5 5 7 9 3 1

Sample Output 1:

25 5.0

#### Program or Solution

` ````
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
int *a,n,i,sum=0,avg;
printf("Enter size of array:");
scanf("%d",&n);
a=malloc(sizeof(int)*n);
printf("Enter %d Elements:",n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
for(i=0;i<n;i++)
{
sum=sum+a[i];
}
avg=sum/n;
printf("\nSum of array:%d \nAverage of Array:%d",sum,avg);
return 0;
}
```

#### Program Explanation

i is initialized to 0 and incremented by 1 at each iteration of both the for loops.

First for loop reads n input numbers from user and stores them in array a[] from location 0 to n-1

Second for loop adds all the n elements of array located from 0 to n-1

Finally compute average using avg=sum/n statement and prints average avg using printf statement.