C Program to Print Hollow Square Pattern With Diagonals

In this tutorial, i am going to show you how to print hollow square pattern star with diagonals with the help of for loop and while loop in c programs.

All C Program to Print Hollow Square Pattern With Diagonals

• C Program to Print Hollow Square Pattern With Diagonals using For Loop
• C Program to Print Hollow Square Pattern With Diagonals using While Loop

C Program to Print Hollow Square Pattern With Diagonals using For Loop

#include<stdio.h>
int main()
{
    int i, j, rows;
    printf("Enter Hollow Square with Diagonals Rows =  ");
    scanf("%d", &rows);
    printf("Hollow Square Star Pattern With Diagonals\n");
    for(i = 1; i <= rows; i++)
    {
        for(j = 1; j <= rows; j++)
        {
            if(i == 1 || i == rows || i == j || j == 1 || j == rows || j == rows - i + 1)
            {
                printf("* ");
            }
            else
            {
                printf("  ");
            }         
        }
        printf("\n");   
    }
    return 0;
}

The result of the above c program; as follow:

Enter Hollow Square with Diagonals Rows =  8
Hollow Square Star Pattern With Diagonals
* * * * * * * * 
* *         * * 
*   *     *   * 
*     * *     * 
*     * *     * 
*   *     *   * 
* *         * * 
* * * * * * * * 

C Program to Print Hollow Square Pattern With Diagonals using While Loop

#include<stdio.h>
int main()
{
    int i, j, rows;
    printf("Enter Hollow Square with Diagonals Rows =  ");
    scanf("%d", &rows);
    printf("Hollow Square Pattern With Diagonals\n");
    i = 1;
    while(i <= rows)
    {
        j = 1;
        while(j <= rows)
        {
            if(i == 1 || i == rows || i == j || j == 1 || j == rows || j == rows - i + 1)
            {
                printf("* ");
            }
            else
            {
                printf("  ");
            } 
            j++;        
        }
        printf("\n");  
        i++; 
    }
    return 0;
}

The result of the above c program; as follow:

Enter Hollow Square with Diagonals Rows =  10
Hollow Square Pattern With Diagonals
* * * * * * * * * * 
* *             * * 
*   *         *   * 
*     *     *     * 
*       * *       * 
*       * *       * 
*     *     *     * 
*   *         *   * 
* *             * * 
* * * * * * * * * *

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