Write a C Program to Find the Sum and Average of Three Numbers

In this article, we will see how to write a C program to find the sum and average of three numbers.

Algorithm

Step 1: Start 

Step 2: Declare variables num1, num2,num3, and sum, average. 

Step 3: Read values num1,num2,num3 

Step 4: Add num1,num2, num3, and assign the result to the sum. 

             sum←num1+num2 +num3 

             average ← sum/3 

Step 5: Display the sum and average 

Step 6: Stop

Flow Chart

      +----------------+
      |     Start      |
      +----------------+
              |
              v
+---------------------------------------------------+
| Declare variables: num1, num2, num3, sum, average |
+---------------------------------------------------+
              |
              v
      +------------------------------+
      | Read values: num1,num2,num3  |
      +------------------------------+
              |
              v
      +---------------------------------------+
      | sum ← num1 + num2 + num3              |
      | average ← sum / 3                     |
      +---------------------------------------+
              |
              v
      +-------------------------------+
      | Display the sum and average   |
      +-------------------------------+
              |
              v
      +----------------+
      |     Stop       |
      +----------------+

C Program to Find the Sum and Average of Three Numbers

#include<stdio.h>
 int main( )
 {
     int a,b,c;
     int sum,average;
     printf("Enter any three integers: ");
     scanf("%d%d %d",&a,&b,&c);
     sum = a+b+c;
     average=sum/3;
     printf("Sum and average of three integers: %d %d",sum,average);
     return 0;
} 

SAMPLE INPUT:

Enter any three integers:2 4 5

EXPECTED OUTPUT:

Sum and average of three integers: 11 3 

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