BR012frameExample

#include <iostream>
#include <chrono>
#include <thread>


/*
*******
*#####*
*#***#*
*#***#*
*#***#*
*#####*
*******
*/

int main()
{
    int side{15};
    int sub{ 6 };
    //std::cout << "enter line length\n";
    //std::cin >> side;
    const char pos = '#';
    const char neg = ' ';
    bool positive{ false };
    bool hPositive{ false };
    bool vPositive{ false };

    for (int y{ 0 }; y < side; ++y)
    {
        for (int x{ 0 }; x < side; ++x)
        {
            hPositive = ((y == sub or y == (side - 1 - sub)) and (x >= sub and x <= (side - 1 - sub)));
            vPositive = ((x == sub or x == (side - 1 - sub)) and (y >= sub and y <= (side - 1 - sub)));
            positive = (hPositive or vPositive);

            std::cout << ' ' << (positive ? pos : neg) << ' ';
        }
        std::cout << '\n';
    }

    return 0;
}