Calculate the Factorial of a Number in C# Console Application (with Method)

The factorial of a number is defined is the product of natural numbers from one to that particular number. Mathematically,

n! = 1 * 2 * 3 * …. * (n-1) * n

For example, the factorial of 5 is

5! = 1 * 2 * 3 * 4 *5= 120

This article will explain you how to find the factorial of a number through iteration as well as recursion.

Code:


public static int Faktor(int num)
        {
            int result = 1;
            for(int i=1;i<=num;i++)
            {
                result *= i;
            }
            return result;
        }
        static void Main(string[] args)
        {
            Console.Write("Number : ");
            int number = Convert.ToInt32(Console.ReadLine());
            int fact = Faktor(number);
            Console.WriteLine("{0} factorial is {1}", number, fact);
            Console.ReadKey();
        }

public static int Faktor(int num)

{

int result = 1;

for(int i=1;i<=num;i++)

{

result *= i;

}

return result;

}

static void Main(string[] args)

{

Console.Write("Number : ");

int number = Convert.ToInt32(Console.ReadLine());

int fact = Faktor(number);

Console.WriteLine("{0} factorial is {1}", number, fact);

Console.ReadKey();

}

Output:

Calculate the Factorial of a Number in C# Console Application (with Method)

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