Programming Example

C# Program to print Number Triangle

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💻 Practical Program

📘 Step by Step Learning

Like the alphabet triangle, we can write the C# program to print the number triangle. The number triangle can be printed in different ways.

Let us see the C# example to print the number triangle.

Program Code

using System;  
  public class PrintExample  
   {  
     public static void Main(string[] args)  
      {  
       int  i,j,k,l,n;           
       Console.Write("Enter the Range=");    
       n= int.Parse(Console.ReadLine());     
       for(i=1; i<=n; i++)      
       {          
        for(j=1; j<=n-i; j++)      
        {      
         Console.Write(" ");      
        }      
        for(k=1;k<=i;k++)      
        {      
         Console.Write(k);      
        }      
        for(l=i-1;l>=1;l--)      
        {      
        Console.Write(l);      
        }      
        Console.Write("\n");      
       }       
   }  
  }

Output

Enter the Range=5
     1
    121
   12321
  1234321
 123454321

Explanation

None

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.