C++ Program to find Average of N Numbers

Posted in C++ Tutorial

Updated on Oct 27, 2024

By Mari Selvan

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⏳ 4 mins

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C++ Program to find Average of N Numbers

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.cpp

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#include <iostream>

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

      // Input N numbers from the user
      std::cout << "Enter " << n << " numbers:" << std::endl;

      for (int i = 0; i < n; ++i) {
        std::cin >> 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::findAverage(n);

  // Display the result
  std::cout << "The average of the entered numbers is: " << result << std::endl;

  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 class FindAverage containing a static method 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 method, 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.