C program to Print Rectangle Star Pattern

How to write a C Program to Print Rectangle Star Pattern with an example? And also show you how to print a Rectangle pattern with different symbols.

C program to Print Rectangle Star Pattern

This C program allows the user to enter the number of rows and columns. These values will decide the number of rows and columns of a rectangle. Here, we are going to print the stars until it reaches the user-specified rows and columns.

#include<stdio.h>
 
int main()
{
    int i, j, rows, columns;
     
    printf("Please Enter the Number of rows:\n");
    scanf("%d", &rows);
    
    printf("Please Enter the Number of Columns:\n");
    scanf("%d", &columns);
	 
    for(i = 0; i < rows; i++)
    {
        for(j = 0; j < columns; j++)
	{
           printf("*");
        }
        printf("\n");
    }
    return 0;
}

Let us see the Nested for loop

for(i = 0; i < rows; i++) 
{ 
   for(j = 0; j < columns; j++) 
     { 
       printf("*"); 
     } 
   printf("\n"); 
}

Outer Loop – First Iteration
From the above C Programming screenshot, you can see that the value of i is 0 and Rows is 5, so the condition (i < 5) is True. So, it will enter into the second for loop

Inner Loop – First Iteration
The j value is 0 and the condition (j < 10) is True. So, it will start executing the statement inside the loop. The following statement will print *

printf("*");

The below statement will increment the Value of j by 1 using the Increment Operator.

j++

It will happen until it reaches 10, and after that, both the Inner Loop and Outer loop will terminate.

C Program to Print Rectangle Pattern with Dynamic Character

This rectangle pattern program allows the user to enter the Symbol that they wants to print as a rectangle pattern.

#include<stdio.h>
 
int main()
{
    int i, j, rows, columns;
    char Ch;
       
    printf("Please Enter any Symbol\n");
    scanf("%c", &Ch);
     
    printf("Please Enter the Number of rows:\n");
    scanf("%d", &rows);
    
    printf("Please Enter the Number of Columns:\n");
    scanf("%d", &columns);
	 
    for(i = 0; i < rows; i++)
    {
        for(j = 0; j < columns; j++)
        {
           printf("%c", Ch);
        }
        printf("\n");
    }
    return 0;
}

Please Enter any Symbol
#
Please Enter the Number of rows:
7
Please Enter the Number of Columns:
15
###############
###############
###############
###############
###############
###############
###############

Rectangle Pattern using While Loop

In this C program, we just replaced the For Loop with the While Loop. I suggest you refer While Loop article to understand the logic.

#include<stdio.h>
 
int main()
{
    int i, j, rows, columns;
    char Ch;
       
    printf("Please Enter any Symbol\n");
    scanf("%c", &Ch);
     
    printf("Please Enter the Number of rows:\n");
    scanf("%d", &rows);
    
    printf("Please Enter the Number of Columns:\n");
    scanf("%d", &columns);
    i = 0;
    while(i < rows)
    {
    	for(j = 0; j < columns; j++)
    	{
    	   printf("%c", Ch);
	}
	printf("\n");
	i++;
    }
    return 0;
}

Please Enter any Symbol
*
Please Enter the Number of rows:
10
Please Enter the Number of Columns:
15
***************
***************
***************
***************
***************
***************
***************
***************
***************
***************