C Program to Print H Star Pattern

Write a C program to print H star pattern using for loop.

#include <stdio.h>

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

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

	printf("Printing H Star Pattern\n");

	for (i = 1; i <= rows; i++)
	{
		for (j = 1; j <= i; j++)
		{
			printf("*");
		}
		for (k = i * 2; k <= rows * 2 - 1; k++)
		{
			printf(" ");
		}
		for (l = 1; l <= i; l++)
		{
			printf("*");
		}
		printf("\n");
	}

	for (i = 1; i <= rows - 1; i++)
	{
		for (j = rows - 1; j >= i; j--)
		{
			printf("*");
		}
		for (k = 1; k <= i * 2; k++)
		{
			printf(" ");
		}
		for (l = rows - 1; l >= i; l--)
		{
			printf("*");
		}
		printf("\n");
	}
}

In this C example, we used the while loop to print the H star pattern.

#include <stdio.h>

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

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

	printf("Printing H Star Pattern\n");
	i = 1;
	while (i <= rows)
	{
		j = 1;
		while (j <= i)
		{
			printf("*");
			j++;
		}
		k = i * 2;
		while (k <= rows * 2 - 1)
		{
			printf(" ");
			k++;
		}
		l = 1;
		while (l <= i)
		{
			printf("*");
			l++;
		}
		printf("\n");
		i++;
	}

	i = 1;
	while (i <= rows - 1)
	{
		j = rows - 1;
		while (j >= i)
		{
			printf("*");
			j--;
		}
		k = 1;
		while (k <= i * 2)
		{
			printf(" ");
			k++;
		}
		l = rows - 1;
		while (l >= i)
		{
			printf("*");
			l--;
		}
		printf("\n");
		i++;
	}
}

Please Enter H Pattern Rows = 11
Printing H Star Pattern
*                    *
**                  **
***                ***
****              ****
*****            *****
******          ******
*******        *******
********      ********
*********    *********
**********  **********
**********************
**********  **********
*********    *********
********      ********
*******        *******
******          ******
*****            *****
****              ****
***                ***
**                  **
*                    *

C Program to Print H Star Pattern using a do while loop

#include <stdio.h>

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

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

	printf("Printing H Star Pattern\n");
	i = 1;
	do
	{
		j = 1;
		do
		{
			printf("*");
		} while (++j <= i);
		k = i * 2;
		while (k <= rows * 2 - 1)
		{
			printf(" ");
			k++;
		}
		l = 1;
		do
		{
			printf("*");
		} while (++l <= i);
		printf("\n");
	} while (++i <= rows);

	i = 1;
	do
	{
		j = rows - 1;
		do
		{
			printf("*");
		} while (--j >= i);
		k = 1;
		do
		{
			printf(" ");
		} while (++k <= i * 2);
		l = rows - 1;
		do
		{
			printf("*");
		} while (--l >= i);
		printf("\n");
	} while (++i <= rows - 1);
}

Please Enter H Pattern Rows = 13
Printing H Star Pattern
*                        *
**                      **
***                    ***
****                  ****
*****                *****
******              ******
*******            *******
********          ********
*********        *********
**********      **********
***********    ***********
************  ************
**************************
************  ************
***********    ***********
**********      **********
*********        *********
********          ********
*******            *******
******              ******
*****                *****
****                  ****
***                    ***
**                      **
*                        *

Here, we created HPattern function that run the repeated for loops. This C program allows the user to enter the character and print the given character’s H pattern using that function.

#include <stdio.h>

void HPattern(int rows, char ch);

int main()
{
	int rows;
	char ch;

	printf("Enter Character for H Pattern = ");
	scanf("%c", &ch);

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

	printf("Printing H Pattern\n");
	HPattern(rows, ch);
}

void HPattern(int rows, char ch)
{
	int i, j, k, l;

	for (i = 1; i <= rows; i++)
	{
		for (j = 1; j <= i; j++)
		{
			printf("%c", ch);
		}
		for (k = i * 2; k <= rows * 2 - 1; k++)
		{
			printf(" ");
		}
		for (l = 1; l <= i; l++)
		{
			printf("%c", ch);
		}
		printf("\n");
	}

	for (i = 1; i <= rows - 1; i++)
	{
		for (j = rows - 1; j >= i; j--)
		{
			printf("%c", ch);
		}
		for (k = 1; k <= i * 2; k++)
		{
			printf(" ");
		}
		for (l = rows - 1; l >= i; l--)
		{
			printf("%c", ch);
		}
		printf("\n");
	}
}

Enter Character for H Pattern = $
Please Enter H Pattern Rows = 14
Printing H Pattern
$                          $
$$                        $$
$$$                      $$$
$$$$                    $$$$
$$$$$                  $$$$$
$$$$$$                $$$$$$
$$$$$$$              $$$$$$$
$$$$$$$$            $$$$$$$$
$$$$$$$$$          $$$$$$$$$
$$$$$$$$$$        $$$$$$$$$$
$$$$$$$$$$$      $$$$$$$$$$$
$$$$$$$$$$$$    $$$$$$$$$$$$
$$$$$$$$$$$$$  $$$$$$$$$$$$$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$$$$$$$$$$$$$  $$$$$$$$$$$$$
$$$$$$$$$$$$    $$$$$$$$$$$$
$$$$$$$$$$$      $$$$$$$$$$$
$$$$$$$$$$        $$$$$$$$$$
$$$$$$$$$          $$$$$$$$$
$$$$$$$$            $$$$$$$$
$$$$$$$              $$$$$$$
$$$$$$                $$$$$$
$$$$$                  $$$$$
$$$$                    $$$$
$$$                      $$$
$$                        $$
$                          $