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home / developersection / forums / create a function to calculate the factorial of a given number using recursion.
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Utpal Vishwas
Utpal Vishwas

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I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.

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1 Answers

Aryan Kumar
Aryan Kumar 15 Jun 2023
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Sure, here is the C# code to create a function to calculate the factorial of a given number using recursion:

C#

using System;

public class Factorial
{
    public static int Factorial(int number)
    {
        if (number == 0)
        {
            return 1;
        }
        else
        {
            return number * Factorial(number - 1);
        }
    }

    public static void Main(string[] args)
    {
        int number = Convert.ToInt32(Console.ReadLine());
        int factorial = Factorial(number);
        Console.WriteLine("{0}! = {1}", number, factorial);
    }
}

This function first checks if the given number is equal to 0. If it is, then the function returns 1. Otherwise, the function returns the product of the given number and the factorial of the number minus 1. The Main() method then reads a number from the user and calls the Factorial() function to calculate the factorial of the number. The result is then printed to the console.

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