C Program to Print Alphabet N Pattern

In this article, we will show how to write a C program to print the Alphabet N pattern or shape of stars using for loop, while loop, and functions.

#include <stdio.h>

int main()
{
	int rows;

	printf("Enter Rows = ");
	scanf("%d", &rows);

	for (int i = 0; i < rows; i++)
	{
		printf("*");
		for (int j = 0; j <= rows; j++)
		{
			if (j == rows - 2 || j == i - 1 )
			{
				printf("*");
			}
			else
			{
				printf(" ");
			}
		}
		printf("\n");
	}
	return 0;
}
Enter Rows = 18
*                *  
**               *  
* *              *  
*  *             *  
*   *            *  
*    *           *  
*     *          *  
*      *         *  
*       *        *  
*        *       *  
*         *      *  
*          *     *  
*           *    *  
*            *   *  
*             *  *  
*              * *  
*               **  
*                *

Instead of a for loop, this Alphabet N Pattern of stars program uses a while loop to iterate the rows and columns. For more star programs, click here.

#include <stdio.h>

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

	printf("Enter Rows = ");
	scanf("%d", &rows);

	i = 0;
	while ( i < rows)
	{
		printf("*");
		j = 0;
		while ( j <= rows)
		{
			if (j == rows || j == i )
			{
				printf("*");
			}
			else
			{
				printf(" ");
			}
			j++;
		}
		printf("\n");
		i++;
	}
	return 0;
}
Enter Rows = 15
**              *
* *             *
*  *            *
*   *           *
*    *          *
*     *         *
*      *        *
*       *       *
*        *      *
*         *     *
*          *    *
*           *   *
*            *  *
*             * *
*              **

In this C program, we create an alphabetNPat function that accepts those values and prints the Alphabet N shape or pattern of the given char.

#include <stdio.h>

void alphabetNPat(int rows, char a)
{
	for (int i = 0; i < rows; i++)
	{
		printf("%c", a);
		for (int j = 0; j <= rows; j++)
		{
			if (j == rows - 2 || j == i - 1 )
			{
				printf("%c", a);
			}
			else
			{
				printf(" ");
			}
		}
		printf("\n");
	}
}

int main()
{
	int rows;
	char a;

	printf("Enter Alphabet =  ");
	scanf("%c", &a);

	printf("Enter Rows = ");
	scanf("%d", &rows);

	alphabetNPat(rows, a);
	return 0;
}
C Program to Print Alphabet N Pattern