Program to find Sum and Average of three Numbers

Sum and Average Of 3 Numbers :

C Program to find the sum and average of given three numbers:-

Here in this blog post, let us discuss how to write a basic C program to find the sum and average of  3 numbers. 

This post includes the two different programs to find the sum and average for integer values and for the float values.

Program to find the Sum and average of 3 given integer values:-

The below is a Data input and output program which takes the given input from the console and performs the operation and then prints the output to the console.

Program: -

#include <stdio.h>

void main() {

int num1, num2, num3;

int sum, avg;

printf("Enter three integer values : ");

scanf("%d %d %d", &num1, &num2, &num3);

sum = num1 + nnum2 + num3;

printf("sum of %d, %d and %d  : %d\n", num1, num2, num3, sum);

avg = sum / 3;

printf("Average of %d, %d and %d : %d\n", num1, num2, num3, avg);

}

Output: -

Enter three integer values : 40 20 30

sum of 40, 20 and 30 : 90

Average of 40, 20 and 30 : 30

Program to find the Sum and Average of two given integer values

Program: -

#include <stdio.h>

void main() {

int num1 = 12;

int num2 = 16;

int num3 = 21;

int sum;

int avg;

sum  = num1 + num2 + num3;

printf("sum of %d , %d and %d : %d\n", num1, num2, num3, sum);

avg = sum / 3;

printf("Average of %d, %d and %d : %d\n", num1, num2, num3, avg);

}

Output: -  

sum of 12, 16 and 21 : 49

Average of 12, 16 and 21 : 16

Program to find the Sum and Average of two given integer values

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The above two programs only gives the approximate average values. 

To get the Accurate values follow the code given below:-

Program: -

#include <stdio.h>

void main() {

int num1, num2, num3, sum;

float avg;

printf("Enter the three integer values : ");

scanf("%d %d %d", &num1, &num2, &num3);

sum = num1 + num2 + num3;

printf("sum of %d, %d and %d : %d", num1, num2, num3, sum);

avg = sum / 3.0;

printf("Average of %d, %d and %d :%d", num1, num2, num3, avg);

}

Output: -

Enter three integer values : 12 21 16

sum of 12, 21 and 16 : 49

Average of 12, 21 and 16 : 16.333334