C# Sharp Exercises: Print the first n natural number

C# Sharp Recursion: Exercise-1 with Solution

Write a program in C# Sharp to print the first n natural number using recursion.

Pictorial Presentation:

Sample Solution:

C# Sharp Code:

using System;

class RecExercise1
{
    static int printNatural(int stval, int ctr)
    {
	if (ctr < 1)
	{
	    return stval;
	}
	ctr--;
	Console.Write(" {0} ",stval);
	return printNatural(stval + 1, ctr);
    }
    static void Main()
    {
	Console.Write("\n\n Recursion : Print the first n natural number :\n");
	Console.Write("---------------------------------------------------\n");
	Console.Write(" How many numbers to print : ");
	int ctr= Convert.ToInt32(Console.ReadLine());
	// Call recursive method with two parameters.	
	printNatural(1, ctr);
	Console.Write("\n\n");
    }
}

Sample Output:

Recursion : Print the first n natural number :                                                               
---------------------------------------------------                                                           
 How many numbers to print : 20                                                                               
 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 
 

Flowchart :

C# Sharp Code Editor:

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