C# Exercise: 9 Average

This exercise is a great opportunity to learn how to calculate the average of several numbers in C#. In this program, the user must enter four numbers, and the program will calculate and display the average of those numbers. This type of exercise will help you understand how to perform simple arithmetic operations in C# and how to handle user inputs to calculate specific results.

The instructions for the user are as follows:
1. The program will prompt the user to enter four numbers.
2. Then, it will calculate the average of those numbers and display the result on the screen.

This exercise is perfect for practicing how to use Console.ReadLine() to capture user input and how to perform arithmetic operations in C# such as summing numbers and dividing to get the average. You'll also learn how to display results using Console.WriteLine(), one of the most essential tools for interacting with the user in the console.

 Exercise

Average

 Objetive

Write a C# program to calculate and display the average of four numbers entered by the user.

 Example Code

using System; // Importing the System namespace to use Console functionalities

// Main class of the program
class Program
{
    // Main method where the program execution begins
    static void Main()
    {
        // Declaring four variables to store the numbers entered by the user
        double num1, num2, num3, num4;

        // Asking the user to enter the first number and reading the input
        Console.Write("Enter the first number: ");
        num1 = Convert.ToDouble(Console.ReadLine());

        // Asking the user to enter the second number and reading the input
        Console.Write("Enter the second number: ");
        num2 = Convert.ToDouble(Console.ReadLine());

        // Asking the user to enter the third number and reading the input
        Console.Write("Enter the third number: ");
        num3 = Convert.ToDouble(Console.ReadLine());

        // Asking the user to enter the fourth number and reading the input
        Console.Write("Enter the fourth number: ");
        num4 = Convert.ToDouble(Console.ReadLine());

        // Calculating the average of the four numbers
        double average = (num1 + num2 + num3 + num4) / 4;

        // Printing the average to the screen
        Console.WriteLine("The average of the four numbers is: " + average);
    }
}

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