Java Program to Print Right Angled Triangle with Increasing Alternate Case Character Pattern

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Program to Print Right Angled Triangle with Increasing Alternate Case Character Pattern

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

Example-1

When starting character=h 
and row value=3

h
I j
k L m
Example-2:

When starting character=a 
and row value=5

a
B c
d E f
G h I j
k L m N o

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;
import java.lang.*;
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("First 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++){
                    //Alternating the case in each iteration
                    if((row+col)%2==0)
                        System.out.print(Character.toLowerCase(c)+" ");
                    else
                        System.out.print(Character.toUpperCase(c)+" ");
                    //Incrementing the character
                    c++;
                }
                //Prints a newline
                System.out.println();
            }
        }
    }
}

Output

First Character : a
Rows : 5

a
B c
d E f
G h I j
k L m N o

C CODE:

#include <stdio.h>

int main()
{
    //Taking character to be printed as input from the user
    printf("First 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++)
            {
                //Alternating the case in each iteration
                if ((row + col) % 2 == 0)
                    printf("%c ", tolower(c));
                else
                    printf("%c ", toupper(c));
                //Incrementing the character
                c++;
            }
            //Prints a newline
            printf("\n");
        }
    }
    return 0;
}

Output

First Character : a
Rows : 5

a
B c
d E f
G h I j
k L m N o

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 << "First 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++)
            {
                //Alternating the case in each iteration
                if ((row + col) % 2 == 0)
                    cout << (char)tolower(c) << " ";
                else
                    cout << (char)toupper(c) << " ";
                //Incrementing the character
                c++;
            }
            //Prints a newline
            cout << endl;
        }
    }
    return 0;
}


Output:  First Character : a
Rows : 5

a
B c
d E f
G h I j
k L m N o

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