C Program to Find Average of Three Numbers

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C Program to Find the Average of Three Numbers

To find the average of three numbers, we will use the formula to find the average.

Average of three number formula

Average = Sum/Count

Here Sum will be obtained by adding three numbers and instead of Count, it will be 3 because here we are taking the average of 3 numbers, if we take the average of 5 numbers, then 5 will come in place of Count.

C Program to Find the Average of Three Numbers (Simple Way)

Algorithm

• Program Start
• Declaring Variables
• Input Three Numbers in Variables
• Calculating Average of Three Numbers (average = sum/count)
• Displaying the Average of Three Numbers
• Program End

Program

//C Program to Find the Average of Three Numbers (Simple Way)

#include<stdio.h>
void main()
{
   int x, y, z;           //Declaring Three Variables
   float avg;
   printf("Enter Three Numbers : \n");    
   scanf("%d %d %d",&x, &y, &z);     //Input Numbers
 
   avg=(x+y+z)/3.0;                  //Calculating Average of three numbers
   printf("Average of Three Numebers is : %f", avg);    
   
}

Output

Enter Three Numbers :
10
2
38
Average of Three Numebers is : 16.666666

 

Program Explanation

• In this program, we first declared three variables x, y, z.
• After that created a variable named avg with the help of float data type
• In this avg variable, we will store the average of the number three.
• After declaring the variables, we got input three numbers from the user and store those values ​​in the x, y, z variables.
• After this, we Calculate the average of three numbers using the formula (average = sum/count) and stored its result in the avg variable.
• Finally, we printed the stored value in this avg variable on the screen with the help of printf() function.
• In this program, when we calculate the average of three numbers, we wrote 3.0 instead of 3, which means the same thing in maths.

C Program to Find the Average of Three Numbers Using Function

Algorithm

• Program Start
• Declaring variables
• Input Numbers
• Calling Function to find Average
• Calculating Average
• Print the Average of three Numbers
• Program End

Program

//C Program to Find the Average of Three Numbers Using Function

#include<stdio.h>
void average(int,int, int);
void main()
{
   int x, y, z;           //Declaring Variables
   printf("Enter Three Numbers : \n");    
   scanf("%d %d %d",&x, &y, &z);     //Input Numbers
 
   average(x,y,z);  //Calling Function to find the Average of three numbers
   
}
void average(int a,int b, int c)
{   
    float avg;
    avg=(a+b+c)/3.0;     
    printf("Average of Three Numebers is : %f", avg);    
}

Output

Enter Three Numbers : 
10
38
23
Average of Three Numebers is : 23.666666

 

C Program to Find the Average of Three Numbers Using Array

Algorithm

• Program Start
• Declaring variables
• Input Numbers
• Calculating Sum
• Calculating Average
• Print the Average of three Numbers
• Program End

Program

//C Program to Find the Average of Three Numbers Using Array

#include<stdio.h>
void main()
{ 
  //Declaring  Variables

   int i, sum = 0, a[3]; 
   float avg;

   printf("Enter Three Numbers : \n");
   for(i=0; i<3; i++)
   {
    scanf("%d",&a[i]);  //Input Numbers
   }

   for(i=0; i<3;i++)
   {
    sum = sum + a[i];  //Input Numbers
   }

   avg=sum/3.0;

   printf("Average of Three Numebers is : %f", avg);

}

Output

Enter Three Numbers :
38
23
38
Average of Three Numebers is : 33.000000

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