C# Sharp Exercises: Function : To find the factorial of a given number

C# Sharp Function: Exercise-11 with Solution

Write a program in C# Sharp to create a recursive function to find the factorial of a given number.

Pictorial Presentation:

Sample Solution:

C# Sharp Code:

using System;
class funcexer11
{
static void Main()
{
      decimal f;
	  Console.Write("\n\nRecursive Function : To find the factorial of a given number :\n");
      Console.Write("------------------------------------------------------------------\n");
	  Console.Write("Input a number : ");
      int num= Convert.ToInt32(Console.ReadLine());
      f = Factorial(num);
      Console.WriteLine("The factorial of {0}! is  {1}", num, f);
}
static decimal Factorial(int n1)
    {
// The bottom of the recursion
      if (n1 == 0)
        {
         return 1;
        }
// Recursive call: the method calls itself
       else
        {
          return n1 * Factorial(n1 - 1);
        }
    }
}

Sample Output:

Recursive Function : To find the factorial of a given number :                                                
------------------------------------------------------------------                                            
Input a number : 5                                                                                            
The factorial of 5! is  120 

Flowchart :

C# Sharp Code Editor:

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