What is recursive ?

Hello everyone,

We write algorithm sometimes. We should use recursive functions when performing mathematical operations. One of them is factorial calculation.

Recursive function calculation application that I made in its simplest form:

using System;
namespace FactorialConsoleApp
{
public class Program
{
static void Main(string[] args)
{
Program p = new Program();
int factorial = p.CalculateFactorial(4);
Console.WriteLine(“factorial:” + factorial);
Console.ReadLine();
}
public int CalculateFactorial(int number)
{
if (number == 1)
return number;
else
return number * CalculateFactorial(number -1);
}
}
}

Reducing by one the number we want to calculate whenever the number is one we multiply the numbers and return number.