C Program to Print Inverted Right Triangle Alphabets Pattern

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

#include <stdio.h>

int main()
{
	int rows;

	printf("Enter Inverted Right Triangle of Alphabets Rows = ");
	scanf("%d", &rows);

	printf("Printing Inverted Right Triangle Alphabets Pattern\n");
	int alphabet = 65;

	for (int i = rows - 1; i >= 0; i--)
	{
		for (int j = 0; j <= i; j++)
		{
			printf("%c ", alphabet + j);
		}
		printf("\n");
	}
}

This C example prints the inverted right triangle pattern of alphabets using a while loop.

#include <stdio.h>

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

	printf("Enter Inverted Right Triangle of Alphabets Rows = ");
	scanf("%d", &rows);

	printf("Printing Inverted Right Triangle Alphabets Pattern\n");
	alphabet = 65;
	i = rows - 1;
	
	while (i >= 0)
	{
		j = 0;
		while (j <= i)
		{
			printf("%c ", alphabet + j);
			j++;
		}
		printf("\n");
		i--;
	}
}

Enter Inverted Right Triangle of Alphabets Rows = 13
Printing Inverted Right Triangle Alphabets Pattern
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 

In this C pattern example, we used the do while loop to display the right triangle of alphabets.

#include <stdio.h>

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

	printf("Enter Inverted Right Triangle of Alphabets Rows = ");
	scanf("%d", &rows);

	printf("Printing Inverted Right Triangle Alphabets Pattern\n");
	
	alphabet = 65;
	i = rows - 1;

	do
	{
		j = 0;
		do
		{
			printf("%c ", alphabet + j);

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

	} while (--i >= 0);
}

Enter Inverted Right Triangle of Alphabets Rows = 15
Printing Inverted Right Triangle Alphabets Pattern
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