C#: Display the pattern like right angle using an asterisk

Last update on August 21 2025 12:54:16 (UTC/GMT +8 hours)

Write a program in C# Sharp to display a right angle triangle with an asterisk.

Sample Output:

*
**
***
****

Sample Solution:-

C# Sharp Code:

using System;  // Importing necessary namespace

public class Exercise9  // Declaration of the Exercise9 class
{  
    public static void Main()  // Main method, entry point of the program
    {
        int i, j, rows;  // Declaration of variables 'i', 'j' for iteration, 'rows' to store the number of rows

        Console.Write("\n\n");  // Displaying new lines
        Console.Write("Display the pattern like a right angle using asterisk:\n");  // Displaying the purpose of the program
        Console.Write("------------------------------------------------------");  // Displaying a separator
        Console.Write("\n\n");   

        Console.Write("Input number of rows : ");  // Prompting the user to input the number of rows
        rows = Convert.ToInt32(Console.ReadLine());  // Reading the number entered by the user

        for (i = 1; i <= rows; i++)  // Loop to iterate through each row
        {
            for (j = 1; j <= i; j++)  // Loop to print '*' in each row based on the value of 'i'
            {
                Console.Write("*");  // Displaying asterisks to form the pattern
            }
            Console.Write("\n");  // Moving to the next line to form the right-angled pattern
        }
    }   
}

Sample Output:

Display the pattern like right angle using asterisk:                                                          
------------------------------------------------------                                                        
                                                                                                              
Input number of rows : 10                                                                                     
*                                                                                                             
**                                                                                                            
***                                                                                                           
****                                                                                                          
*****                                                                                                         
******                                                                                                        
*******                                                                                                       
********                                                                                                      
*********                                                                                                     
**********

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