C Program to Print Right Triangle Alphabets Pattern

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

#include <stdio.h>

int main()
{
    int i, j, rows, alphabet = 65;
    
    printf("Enter Right Triangle Alphabets Pattern Rows = ");
    scanf("%d",&rows);

    printf("The Right Angled Triangle Alphabets Pattern\n"); 
    
	for (i = 0 ; i < rows; i++ ) 
	{
		for (j = 0 ; j <= i; j++ ) 	
		{
			printf("%c ", alphabet + j);
		}
		printf("\n");
	}

    return 0;
}

This C example prints the alphabets in the right angled triangle pattern using a while loop.

#include <stdio.h>

int main()
{
    int i = 0, j, rows, alphabet = 65;
    
    printf("Enter Right Triangle Alphabets Pattern Rows = ");
    scanf("%d",&rows);

    printf("\nThe Right Angled Triangle Alphabets Pattern\n"); 
    
	while (i < rows ) 
	{
		j = 0 ;
		while ( j <= i ) 	
		{
			printf("%c ", alphabet + j);
			j++;
		}
		printf("\n");
		i++;
	}

    return 0;
}

Enter Right Triangle Alphabets Pattern Rows = 12

The Right Angled 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

C program to display the right angled triangle pattern of alphabets using a do while loop.

#include <stdio.h>

int main()
{
    int i = 0, j, rows, alphabet = 65;
    
    printf("Enter Right Triangle Alphabets Pattern Rows = ");
    scanf("%d",&rows);

    printf("\nThe Right Angled Triangle Alphabets Pattern\n"); 
    
	do 
	{
		j = 0 ;
		do	
		{
			printf("%c ", alphabet + j);

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

	} while (++i < rows );

    return 0;
}

Enter Right Triangle Alphabets Pattern Rows = 16

The Right Angled 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