Function Factorial (Iterative) - C# Programming Exercise

In this exercise of C#, you will learn how to create an iterative (non-recursive) function to calculate the factorial of the number specified as a parameter. The factorial of a number is calculated by multiplying that number by all the smaller positive integers down to 1. This exercise will help you understand how to perform repetitive calculations efficiently using loops instead of recursion. For example, when running the program with the number 6, the function will return 720 as the result, since 6! = 6 * 5 * 4 * 3 * 2 * 1. This exercise is helpful for practicing the use of loops and working with mathematical calculations in C#.

With this exercise, you will learn how to create iterative functions in C#, allowing you to perform repetitive operations more efficiently, avoiding recursion and improving the program's performance.

Exercise

Function Factorial (Iterative)

Objective

Write an C# iterative (non-recursive) function to calculate the factorial of the number specified as parameter:

Console.Write ( Factorial (6) );

would display
720

Write Your C# Exercise

C# Exercise Example

Example Code Copied

// Importing necessary namespaces
using System;

class Program
{
    // Main method to drive the program
    public static void Main()
    {
        // Calling the Factorial function with the number 6
        Console.WriteLine(Factorial(6)); // Output will be 720
    }

    // Iterative function to calculate the factorial of a number
    public static int Factorial(int n)
    {
        // Initialize the result variable to 1 (since factorial of 0 is 1)
        int result = 1;

        // Iterate through numbers from 1 to n and multiply them together
        for (int i = 1; i <= n; i++)
        {
            result *= i; // Multiply the current result by i
        }

        // Return the calculated factorial value
        return result;
    }
}

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Function Factorial (Iterative) - C# Programming Exercise

Category

Functions

Exercise