C++ Program to Print Right Triangle Character Pattern

Write a C++ program to print right triangle character pattern using for loop.

#include<iostream>
using namespace std;

int main()
{
	int rows;

	cout << "Enter Right Triangle of Characters Rows = ";
	cin >> rows;

	cout << "Right Angled Triangle of Characters Pattern\n";
	int alphabet = 65;

	for (int i = 1; i <= rows; i++)
	{
		for (int j = 0; j <= (2 * i - 2); j++)
		{
			cout << char(alphabet + j) << " ";
		}
		cout << "\n";
	}
}
C++ Program to Print Right Triangle Character Pattern

C++ program to print the right angled triangle characters pattern using a while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet;

	cout << "Enter Right Triangle of Characters Rows = ";
	cin >> rows;

	cout << "Right Angled Triangle of Characters Pattern\n";
	alphabet = 65;
	i = 1;

	while (i <= rows)
	{
		j = 0;
		while (j <= (2 * i - 2))
		{
			cout << char(alphabet + j) << " ";
			j++;
		}
		cout << "\n";
		i++;
	}
}
Enter Right Triangle of Characters Rows = 12
Right Angled Triangle of Characters Pattern
A 
A B C 
A B C D E 
A B C D E F G 
A B C D E F G H I 
A B C D E F G H I J K 
A B C D E F G H I J K L M 
A B C D E F G H I J K L M N O 
A B C D E F G H I J K L M N O P Q 
A B C D E F G H I J K L M N O P Q R S 
A B C D E F G H I J K L M N O P Q R S T U 
A B C D E F G H I J K L M N O P Q R S T U V W 

This C++ example displays the right angled triangle pattern of characters using the do while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet;

	cout << "Enter Right Triangle of Characters Rows = ";
	cin >> rows;

	cout << "Right Angled Triangle of Characters Pattern\n";
	alphabet = 65;
	i = 1;

	do
	{
		j = 0;
		do
		{
			cout << char(alphabet + j) << " ";

		} while (++j <= (2 * i - 2));
		cout << "\n";

	} while (++i <= rows);
}
Enter Right Triangle of Characters Rows = 15
Right Angled Triangle of Characters Pattern
A 
A B C 
A B C D E 
A B C D E F G 
A B C D E F G H I 
A B C D E F G H I J K 
A B C D E F G H I J K L M 
A B C D E F G H I J K L M N O 
A B C D E F G H I J K L M N O P Q 
A B C D E F G H I J K L M N O P Q R S 
A B C D E F G H I J K L M N O P Q R S T U 
A B C D E F G H I J K L M N O P Q R S T U V W 
A B C D E F G H I J K L M N O P Q R S T U V W X Y 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] 

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.