Calculate average in c programming using arrays

Explanation: 

We will solve this problem using array. Because, without array we need to take user input for n numbers again and again by using printf () and scanf () functions for n times each. But in case of array, just we need to initialize the array size and run a for loop from 0 to n-1.

• Formula to find the average of n numbers is :     sum of n numbers / n;

In this c program we will first initialize float sum = 0; and for each array elements we will add array[i] with sum till n-1.

CODE STARTS HERE :

1. #include<stdio.h>
2. int main()
3. {
4.     int n;
5.     printf("For how many numbers you want average?\n");
6.     scanf("%d",&n);
7.     int nums[n];
8.     float sum=0;
9.     printf("Enter the numbers : \n");
10.     for(int i=1;i<=n;i++)
11.     {
12.         printf("Enter %d number: \n",i);
13.         scanf("%d",&nums[i]);
14.         sum=sum+nums[i];
15.     }
16.     float avg=sum/(float)n;
17.     printf("The average is: %f\n",avg);
18.     return 0;
19. }

INPUTS AND OUTPUTS:

For how many numbers you want average?

4

Enter the numbers :

Enter 1 number:

11

Enter 2 number:

12

Enter 3 number:

12

Enter 4 number:

22

The average is: 14.250000