Solid and Hollow Rectangle Star Pattern in C++

June 23, 2019

C++ Program for Solid and Hollow Rectangle Star Pattern

Here we will see how loops can be used for printing solid and hollow rectangle star patterns.Different patterns can be printed using the same concept which is nested looping i.e. loop within a loop.

Now lets see the code for Solid as well as Hollow Rectangle star pattern

Code for solid Rectangle star pattern

// C++ program
//solid Rectangle star pattern 
#include <iostream> 
using namespace std;
// Function for Solid Rectangle 
void solidRectangle(int row,int col) 
{ 
      int i, j; 
      for (i=1; i<=row;i++) 
      { 
           for (j=1;j<=col; j++) // Printing stars after spaces 
                cout << "*"; 
           cout << endl; 
      }

}

// main program 
int main() 
{ 
     int row = 7,col= 9; 
     cout << "\nSolid Rectangle:\n"; 
     solidRectangle(row,col); 
     return 0; 
}

Output:

Solid Rectangle:
*********
*********
*********
*********
*********
*********
*********

C++ code for hollow rectangle star pattern

//C++ program
//hollow Rectangle Star Pattern
#include<iostream>
using namespace std;

// Function for hollow rectangle 
void hollowPattern(int row,int col) 
{ 
     int i, j; 
     for (i=1; i<=row; i++) 
     { 
         if (i==1 || i==row) // printing stars for each solid rows 
     {
          for (j=1; j<=col; j++) 
          cout << "*"; 
     }
     else // stars for hollow rows 
     {
         for (j=1; j<=col; j++) 
               if (j==1 || j==col) 
                    cout << "*"; 
               else
                    cout << " "; 
     } 
     cout << endl; 
     } 
} 
// main program 
int main() 
{ 
     int row = 7,col= 9; 
     hollowPattern(row,col);
     return 0; 
}

Output:

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