How to Get Factorial Value in C#

Mukesh Kumar

11y1.5kCode

Using this code, you can get the factorial value using extention method in C#.

public static int Factorial(this int i)
        {
            int factorial = 1;
            for (int j = i; j > 0; j--)
            {
                factorial *= j;
            }
            return factorial;
        }

And call this method as following:

int i = 5;

Console.WriteLine("Factorial of {0} is {1}", i, i.Factorial());