C Program to Print Alphabet Q Pattern

In this article, we will show how to write a C program to print the Alphabet Q 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++)
	{
		for (int j = 0; j < rows; j++)
		{
			if ((i == 0 || i == rows - 2) && (0 < j < rows - 1))
			{
				printf("*");
			}
			else if ((j == 0 || j == rows - 1) && (i > 0 && (i < rows - 2)))
			{
				printf("*");
			}
			else if ((rows / 2 < i < rows) && (j == i && (j > rows / 2)))
			{
				printf("*");
			}
			else {
				printf(" ");
			}
		}
		printf("\n");
	}
	return 0;
}

Enter Rows = 15
**********
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*       *     *
*        *    *
*         *   *
*          *  *
*           * *
**********
              *

Instead of a for loop, this Alphabet Q 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)
	{
		j = 0;
		while ( j < rows)
		{
			if ((i == 0 || i == rows - 2) && (0 < j < rows - 1))
			{
				printf("*");
			}
			else if ((j == 0 || j == rows - 1) && (i > 0 && (i < rows - 2)))
			{
				printf("*");
			}
			else if ((rows / 2 < i < rows) && (j == i && (j > rows / 2)))
			{
				printf("*");
			}
			else {
				printf(" ");
			}
			j++;
		}
		printf("\n");
		i++;
	}
	return 0;
}

Enter Rows = 17
***********
*               *
*               *
*               *
*               *
*               *
*               *
*               *
*               *
*        *      *
*         *     *
*          *    *
*           *   *
*            *  *
*             * *
***********
                *

In this C program, we create an alphabetQPat function that accepts those values and prints the Alphabet Q shape or Pattern of the given char.

#include <stdio.h>

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

	alphabetQPat(rows, a);
	return 0;
}