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  1. #include<bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main() {
  6.  
  7.   int rows, cols;
  8.  
  9.   cin >> rows;
  10.   cin >> cols;
  11.  
  12.   cout << "Rectangle of dimensions " << rows << "*" << cols << endl;
  13.  
  14.   // Main logic to print hollow rectangle. 
  15.   for (int i = 0; i < rows; i++) {
  16.     for (int j = 0; j < cols; j++) {
  17.  
  18.       // If the index is at the border, then print *. 
  19.       if (i == 0 || i == rows - 1 || j == 0 || j == cols - 1)
  20.         cout << "* ";
  21.       else
  22.         cout << "  ";
  23.     }
  24.     cout << endl;
  25.   }
  26.  
  27.   return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5276KB
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stdin
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4 6
stdout
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Rectangle of dimensions 4*6
* * * * * * 
*         * 
*         * 
* * * * * *
https://ideone.com/DwadKM
hollow rectangle
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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