C Program to Print Right Triangle of Alphabets in Reverse

Write a C program to print right triangle of alphabets in reverse pattern using for loop.

#include <stdio.h>

int main()
{
	int rows;

	printf("Enter Right Triangle Reverse Characters Rows = ");
	scanf("%d", &rows);

	printf("Right Triangle of Characters in Reverse Pattern\n");
	int alphabet = 65;

	for (int i = rows - 1; i >= 0; i--)
	{
		for (int j = rows - 1; j >= i; j--)
		{
			printf("%c ", alphabet + j);
		}
		printf("\n");
	}
}
C Program to Print Right Triangle of Alphabets in Reverse Pattern

This pattern example uses a while loop to print the right angled triangle of alphabets in reverse or descending order.

#include <stdio.h>

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

	printf("Enter Right Triangle Reverse Characters Rows = ");
	scanf("%d", &rows);

	printf("Right Triangle of Characters in Reverse Pattern\n");
	alphabet = 65;
	i = rows - 1;

	while (i >= 0)
	{
		j = rows - 1;
		while (j >= i)
		{
			printf("%c ", alphabet + j);
			j--;
		}
		printf("\n");
		i--;
	}
}
Enter Right Triangle Reverse Characters Rows = 17
Right Triangle of Characters in Reverse Pattern
Q 
Q P 
Q P O 
Q P O N 
Q P O N M 
Q P O N M L 
Q P O N M L K 
Q P O N M L K J 
Q P O N M L K J I 
Q P O N M L K J I H 
Q P O N M L K J I H G 
Q P O N M L K J I H G F 
Q P O N M L K J I H G F E 
Q P O N M L K J I H G F E D 
Q P O N M L K J I H G F E D C 
Q P O N M L K J I H G F E D C B 
Q P O N M L K J I H G F E D C B A 

This C program uses the do while loop to print the right angled triangle pattern of alphabets in reverse order.

#include <stdio.h>

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

	printf("Enter Right Triangle Reverse Characters Rows = ");
	scanf("%d", &rows);

	printf("Right Triangle of Characters in Reverse Pattern\n");
	alphabet = 65;
	i = rows - 1;

	do
	{
		j = rows - 1;
		do
		{
			printf("%c ", alphabet + j);

		} while (--j >= i);
		printf("\n");
	} while (--i >= 0);
}
Enter Right Triangle Reverse Characters Rows = 14
Right Triangle of Characters in Reverse Pattern
N 
N M 
N M L 
N M L K 
N M L K J 
N M L K J I 
N M L K J I H 
N M L K J I H G 
N M L K J I H G F 
N M L K J I H G F E 
N M L K J I H G F E D 
N M L K J I H G F E D C 
N M L K J I H G F E D C B 
N M L K J I H G F E D C B A 

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.