C Program to calculate Average of numbers entered by user using array.

// Program to find the average of n numbers using arrays

Finding Average using Array

#include <stdio.h>

#include <conio.h>

void main() 

{

  int marks[10], i, n, sum = 0;

  double average;

  printf("Enter number of elements: ");

  scanf("%d", &n);

  for(i=0; i < n; ++i) {

    printf("Enter number%d: ",i+1);

    scanf("%d", &marks[i]);

          

    // adding integers entered by the user to the sum variable

    sum += marks[i];

  }

  // explicitly convert sum to double

  // then calculate average

  average = (double) sum / n;

  printf("Average = %.2lf", average);

getch();

}

Expected output:

Enter number of elements: 5

11

22

33

44

55

Average =33.00