Thread: Printing hollow squares

There are better ways to approach but this will do.

Code:

#include <iostream>
using namespace std;

void main()
{
    int size;  // holds the size of the square
    int i, j;    // counters

    // get the size
    cout << "Enter size of square (1-20): ";
    cin >> size;

    // do top row
    for( i = 0; i < size; ++i)
    {
       cout << "*";
    }
    cout << endl;

    // do middle rows
    // subtract 2 to adjust for first and last row
    for( i = 0; i < (size - 2); ++i)
    {
       cout << "*";
       // subtract 2 to adjust for first and last columns
       for( j = 0; j < (size - 2); ++j)
       {
          cout << " ";
       }
       cout << "*" << endl;
    }

    // do bottom row
    for( i = 0; i < size; ++i)
    {
       cout << "*";
    }
    cout << endl;
}