C Program to find Average of N Numbers

Posted in C Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 147 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

🙋 Introduction

In the world of programming, dealing with numerical data and performing calculations is a fundamental skill. One common task is finding the average of a set of numbers. This is a basic operation used in various applications, ranging from statistical analysis to data processing.

In this tutorial, we will explore a C program designed to find the average of N numbers. The program takes a user-specified number of inputs, calculates their sum, and then computes the average.

📄 Example

Let's delve into the C code that accomplishes this task.

findAverage.c

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#include <stdio.h>

// Function to find the average of N numbers
double findAverage(int n) {
  double sum = 0, number;

  // Input N numbers from the user
  printf("Enter %d numbers:\n", n);

  for (int i = 0; i < n; ++i) {
    scanf("%lf", & number);
    sum += number;
  }

  // Calculate the average
  double average = sum / n;
  return average;
}

// Driver program
int main() {
  // Replace this value with your desired number of inputs (N)
  int n = 5;

  // Call the function to find the average
  double result = findAverage(n);

  // Display the result
  printf("The average of the entered numbers is: %lf\n", result);

  return 0;
}

💻 Testing the Program

To test the program with different numbers, modify the value of n in the main function.

Output

Enter 5 numbers:
1 2 3 4 5 
The average of the entered numbers is: 3.000000

🧠 How the Program Works

The program defines a function findAverage that takes an integer n as input, prompts the user to input n numbers, calculates their sum, and then computes and returns the average.
Inside the main function, replace the value of n with your desired number of inputs.
The program calls the findAverage function, and the result is displayed.

🧐 Understanding the Concept to find Average of N Numbers

Before delving into the code, let's understand the concept behind finding the average of N numbers. The program uses a loop to input N numbers, calculates their sum, and then divides the sum by N to find the average.

For example, if the user enters 5 numbers (10, 15, 20, 25, 30), the program calculates (10 + 15 + 20 + 25 + 30) / 5, resulting in an average of 20.