Average of two numbers in C

In this post, you will learn how to find the average of two numbers using the C programming language. There are different ways to find the average of numbers. Here, we have mentioned most of them.

The average of a set of numbers is simply the sum of the numbers divided by the total number of values in the set.

average = sum of all values / number of values

C program to find average of two numbers using user inputs

In the given C program, we ask the user to provide two numbers. Then, we calculate the sum and average of those numbers.

#include <stdio.h>

int main()
{
    int num1, num2;
    float result;
    
    printf("Enter the first number: ");
    scanf("%d",&num1);

    printf("Enter the second number: ");
    scanf("%d",&num2);

    int sum = num1 + num2;

    result = sum/2; //(float)sum/2;

    printf("The Sum of %d and %d : %d\n", num1, num2, sum);
    printf("The Average of %d and %d : %.2f\n", num1, num2, result);
    
    return 0;
}

Enter the first number: 81
Enter the second number: 89
The Sum of 81 and 89 : 170
The Average of 81 and 89 : 85.00

C program to find average of two numbers using function

In the given C program, we create a user-defined function, calculate the sum and average of those numbers.

#include <stdio.h>

float averageOfNumbers(int a, int b)
{
    return (float)(a + b)/2;
}

int main()
{
    int num1, num2;
    
    printf("Enter the first number: ");
    scanf("%d",&num1);

    printf("Enter the second number: ");
    scanf("%d",&num2);
    
    float average = averageOfNumbers(num1, num2);
    
    printf("The average of %d and %d : %.2f\n", num1, num2, average);
    
    return 0;
}

Enter the first number: 78
Enter the second number: 90
The average of 78 and 90 : 84.00

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