C Program to Calculate Average of Elements of an Array.

Input: arr[] = {3, 5, 9, 2, 8}
Output: 5.40

Explanation:
Sum of elements = 3+5+9+2+8 = 27
Total number of elements = 5
Average = 27/5 = 5.40

1. Declare n as integer
2. Declare arr[n] as integer
3. Declare sum as float and initialize it to 0
4. Declare avg as float and initialize it to 0
5. Read n from user
6. Read arr from user
7. for i = 0 to n-1 do
8.     sum = sum + arr[i]
9. end for
10. avg = sum / n
11. Display avg

//C program to find average of array elements
#include <stdio.h>

int main() {
    int size;
    printf("Enter the size of the array: ");
    scanf("%d", &size);

    int arr[size];
    printf("Enter %d elements:\n", size);
    
    // Input array elements and calculate sum
    int sum = 0;
    for (int i = 0; i < size; i++) {
        scanf("%d", &arr[i]);
        sum += arr[i];
    }

    // Calculate average
    float average = (float) sum / size;

    printf("Average of array elements: %.2f\n", average);

    return 0;
}

Enter the size of the array: 6
Enter 6 elements:
12 9 3 2 10 5
Average of array elements: 6.83