C++ Program to Print Right Pascals Triangle Alphabets Pattern

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

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet = 65;

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

	cout << "The Right Pascal Triangle Alphabets Pattern\n";

	for (i = 0; i <= rows - 1; i++)
	{
		for (j = 0; j <= i; j++)
		{
			cout << char(alphabet + j) << " ";
		}
		cout << "\n";
	}

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

C++ program to print right pascals alphabets triangle pattern using a while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet = 65;

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

	cout << "The Right Pascal Triangle Alphabets Pattern\n";
	i = 0;

	while (i <= rows - 1)
	{
		j = 0;
		while (j <= i)
		{
			cout << char(alphabet + j) << " ";
			j++;
		}
		cout << "\n";
		i++;
	}

	i = rows - 1;
	while (i >= 0)
	{
		j = 0;
		while (j < i)
		{
			cout << char(alphabet + j) << " ";
			j++;
		}
		cout << "\n";
		i--;
	}
}
Enter Right Pascal Triangle of Alphabets Rows = 14
The Right Pascal Triangle Alphabets Pattern
A 
A B 
A B C 
A B C D 
A B C D E 
A B C D E F 
A B C D E F G 
A B C D E F G H 
A B C D E F G H I 
A B C D E F G H I J 
A B C D E F G H I J K 
A B C D E F G H I J K L 
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 
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 
A B C D E F G H I J K 
A B C D E F G H I J 
A B C D E F G H I 
A B C D E F G H 
A B C D E F G 
A B C D E F 
A B C D E 
A B C D 
A B C 
A B 
A 

This C++ example displays the right pascals triangle pattern of alphabets using the do while loop.

#include<iostream>
using namespace std;

int main()
{
	int rows, i, j, alphabet = 65;

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

	cout << "The Right Pascal Triangle Alphabets Pattern\n";

	i = 0;

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

		} while (++j <= i);

		cout << "\n";

	} while (++i <= rows - 1);

	i = rows - 1;
	do
	{
		j = 0;
		do
		{
			cout << char(alphabet + j) << " ";

		} while (++j < i);
		cout << "\n";

	} while (--i > 0);
}
Enter Right Pascal Triangle of Alphabets Rows = 17
The Right Pascal Triangle Alphabets Pattern
A 
A B 
A B C 
A B C D 
A B C D E 
A B C D E F 
A B C D E F G 
A B C D E F G H 
A B C D E F G H I 
A B C D E F G H I J 
A B C D E F G H I J K 
A B C D E F G H I J K L 
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 
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 
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 
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 
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 
A B C D E F G H I J K 
A B C D E F G H I J 
A B C D E F G H I 
A B C D E F G H 
A B C D E F G 
A B C D E F 
A B C D E 
A B C D 
A B C 
A B 
A 

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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.