C#: Display the pattern like pyramid using the alphabet

C# Sharp For Loop: Exercise-40 with Solution

Write a C# Sharp Program to display the following pattern using the alphabet.
The pattern is as follows:

A
A B A 
A B C B A
A B C D C B A 

Visual Presentation:

Sample Solution:

C# Sharp Code:

using System;  // Importing necessary namespace

public class Exercise40  // Declaration of the Exercise40 class
{  
    public static void Main()  // Main method, entry point of the program
    {
        int i, j;  // Declaration of loop control variables
        char alph = 'A';  // Variable to store alphabets
        int n;  // Variable to store the number of letters in the pyramid
        int ctr = 1;  // Counter variable for pyramid construction

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

        Console.Write("Input the number of Letters (less than 26) in the Pyramid : \n");  // Prompting user to input the number of letters
        n = Convert.ToInt32(Console.ReadLine());  // Reading user input for the number of letters in the pyramid

        for (i = 1; i <= n; i++)  // Outer loop for the number of rows in the pyramid
        {
            for (j = 0; j <= (ctr / 2); j++)  // Loop to print the first half of letters in each row
            {
                Console.Write("{0} ", alph++);  // Printing the letters in ascending order
            }
            alph--;  // Decrementing the alphabet to start printing the second half

            for (j = 0; j < (ctr / 2); j++)  // Loop to print the second half of letters in each row
            {
                Console.Write("{0} ", alph--);  // Printing the letters in descending order
            }
            ctr = ctr + 2;  // Increasing the counter for the next row
            alph = 'A';  // Resetting the alphabet to 'A' for the next row
            Console.Write("\n");  // Moving to the next line for the new row
        }
    } 
}

Sample Output:

Display the pattern like pyramid using the alphabet:                                                        
------------------------------------------------------                                                                                                 
Input the number of Letters (less than 26) in the Pyramid : 8                                               
A                                                                                                         
A B A                                                                                                       
A B C B A                                                                                                   
A B C D C B A                                                                                               
A B C D E D C B A                                                                                           
A B C D E F E D C B A                                                                                       
A B C D E F G F E D C B A                                                                                   
A B C D E F G H G F E D C B A 

Flowchart:

C# Sharp Code Editor:

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