NIELIT M3-R4: Q.No. 5(a) July 2014

M3-R4: July 2014 (O-Level)

Q. 5(a):
Write a function which accepts an array of size n containing integer values and returns average of all values. Call the function from main program.

Ans:
First lets write the function:

float average(int arr[], int size){
    int i;
    int sum = 0;
    float avg;
    
    for(i=0; i<size; i++){
        sum = sum + a[i];
    }

    avg = (float) sum / size;
    return avg;
}

Calling the function average() from main():

void main(){
    int arr[100], n, i;
    float avg;
    printf("\nEnter number of elements: ");
    scanf("%d", &n);
    for(i=0; i<n; i++){
        printf("\nElement %d: ",i+1);
        scanf("%d", &arr[i]);
    }
    avg = average(arr, n);
    printf("\nThe average is: %f", avg);
    getch();
}