Logic to print hollow rectangle star pattern. *************** * * * *

Programming Example

Logic to print hollow rectangle star pattern.

***************
*             *
*             *
*             *
***************

👁 2,408 Views

💻 Practical Program

📘 Step by Step Learning

Logic to print hollow rectangle star pattern is similar to hollow square star pattern. The only difference is hollow square pattern is a NxN matrix whereas hollow rectangle pattern is a MxN matrix.

Program Code

/**
 * C program to print hollow rectangle star pattern
 */

#include <stdio.h>

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

    /* Input number of rows and columns from user */
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &columns);

    /* Iterate over each row */
    for(i=1; i<=rows; i++)
    {
        /* Iterate over each column */
        for(j=1; j<=columns; j++)
        {
            if(i==1 || i==rows || j==1 || j==columns)
            {
                /* Print star for 1st and last row, column */
                printf("*");
            }
            else
            {
                printf(" ");
            }
        }

        /* Move to the next line */
        printf("\n");
    }

    return 0;
}

Output

Enter number of rows: 5 
Enter number of columns: 10
**********
*        *
*        *
*        *
**********

Explanation

Logic to print hollow rectangle star pattern

***************
*             *
*             *
*             *
***************

Logic to print hollow rectangle star pattern is similar to hollow square star pattern. The only difference is hollow square pattern is a NxN matrix whereas hollow rectangle pattern is a MxN matrix.

Step by step descriptive logic to print hollow rectangle star pattern.

Input number of rows and columns from user. Store it in a variable say rows and columns.
To iterate through rows, run an outer loop from 1 to rows. Define a loop with structure for(i=1; i<=rows; i++).
To iterate through columns, run an inner loop from 1 to columns. Define loop with structure for(j=1; j<=columns; j++).
Inside this loop print star for first or last row or for first or last column, otherwise print blank space. Which is if(i==1 || i==rows || j==1 || j==columns) then print star otherwise space.
After printing all columns of a row, move to next line i.e. print new line after inner loop.

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.

Logic to print hollow rectangle star pattern.
*************** * * * * * * ***************

Program Code

Output

Explanation

Logic to print hollow rectangle star pattern

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

Logic to print hollow rectangle star pattern. *************** * * * * * * ***************

Program Code

Output

Explanation

Logic to print hollow rectangle star pattern

How to learn from this program

Practice suggestion

Quick Practice Flow

Related Programs

Logic to print hollow rectangle star pattern.
*************** * * * * * * ***************