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C# Function to Double an Integer

This C# program defines a function named "Double" that accepts an integer as a parameter and returns the integer doubled. The program demonstrates how to work with simple mathematical operations and return values in C#. In the provided example, calling Double(7) will return 14. This function is useful for scenarios where you need to calculate double the value of an integer.



Group

Functions in C#

Objective

1. Define a function named "Double" that accepts an integer as a parameter.
2. Inside the function, multiply the input integer by 2.
3. Return the result.
4. In the Main method, call the function with a test value, such as 7.
5. Display the result using Console.WriteLine.

Write a C# function named "Double" to calculate and return an integer number doubled. For example, Double(7) should return 14. 

public static void Main()

{

    Console.WriteLine(Double(7));  // This should print 14

}

Example C# Exercise

 Copy C# Code 
using System;

class Program
{
    // Main method where the program execution begins
    public static void Main()
    {
        // Call the Double function with an example value and print the result
        Console.WriteLine(Double(7));  // This should print 14
    }

    // Function to double the value of the input integer
    public static int Double(int number)
    {
        // Multiply the input number by 2 and return the result
        return number * 2;  // Return the doubled value
    }
}

 Output

14

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More C# Practice Exercises of Functions in C#

Explore our set of C# Practice Exercises! Specifically designed for beginners, these exercises will help you develop a solid understanding of the basics of C#. From variables and data types to control structures and simple functions, each exercise is crafted to challenge you incrementally as you build confidence in coding in C#.