Java Program to Print Right Angled Triangle with Decreasing Character Pattern

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Program to Print Right Angled Triangle with Decreasing Character Pattern

In this program we are going to see how to print the right angled triangle with decreasing character pattern.

Example-1

When character=h & row value=3

h
g f
e d c
Example-2:

When character=z & row value=5

Z
Y X
W V U
T S R Q
P O N M L

Now, let’s see the actual program to print it.

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Approach:

  • Enter the character and store it in a variable c
  • Then enter total row and store it in an integer variable row_count.
  • Take one outer for loop to iterate the rows.
  • Take one inner loop to iterate the columns and print the character.
  • After each iteration print a new line.

JAVA CODE:

import java.util.Scanner;
class Main
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        //Taking character to be printed as 
        // input from the user
        System.out.print("Last Character : ");
        char c = scan.next().charAt(0);
    
        //Taking number of rows as input from the user
        System.out.print("Rows : ");
        int row_count = scan.nextInt();
    
        int row, col;
        //Converting the character to its ascii value
        int asciiValue = (int) c;
    
        //Checks whether the character is a letter or not
        if(asciiValue>=65&&asciiValue<=122)
        {
            //Outer loop to iterate rows
            for(row = 0; row<row_count; row++)
            {
                //Inner loop to iterate columns
                for(col = 0; col<row+1; col++)
                {
                    System.out.print(c+" ");
                    //Decrementing the character
                    c--;
                }
                //Prints a newline
                System.out.println();
            }
        }
    }
}

Output:

Last Character : Z
Rows : 5

Z 
Y X 
W V U
T S R Q 
P O N M L

C CODE:

#include <stdio.h>

int main()
{
    //Taking character to be printed as input from the user
    printf("Last Character : ");
    char c;
    scanf("%c", &c);

    //Taking number of rows as input from the user
    printf("Rows : ");
    int row_count;
    scanf("%d", &row_count);

    int row, col;
    //Converting the character to its ascii value
    int asciiValue = (int)c;

    //Checks whether the character is a letter or not
    if (asciiValue >= 65 && asciiValue <= 122)
    {
        //Outer loop to iterate rows
        for (row = 0; row < row_count; row++)
        {
            //Inner loop to iterate columns
            for (col = 0; col < row + 1; col++)
            {
                printf("%c ", c);
                //Decrementing the character
                c--;
            }
            //Prints a newline
            printf("\n");
        }
    }
    return 0;
}

Output:

Last Character : Z
Rows : 5

Z 
Y X 
W V U
T S R Q 
P O N M L

C++ CODE:

#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
    //Taking character to be printed as input from the user
    cout << "Last Character : ";
    char c;
    cin >> c;

    //Taking number of rows as input from the user
    cout << "Rows : ";
    int row_count;
    cin >> row_count;

    int row, col;
    //Converting the character to its ascii value
    int asciiValue = (int)c;

    //Checks whether the character is a letter or not
    if (asciiValue >= 65 && asciiValue <= 122)
    {
        //Outer loop to iterate rows
        for (row = 0; row < row_count; row++)
        {
            //Inner loop to iterate columns
            for (col = 0; col < row + 1; col++)
            {
                cout << c << " ";
                //Decrementing the character
                c--;
            }
            //Prints a newline
            cout << endl;
        }
    }
    return 0;
}


Output:

Last Character : Z
Rows : 5

Z 
Y X 
W V U
T S R Q 
P O N M L

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