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#include <iostream>
#include <Windows.h>
using namespace std;

HWND hWnd = GetConsoleWindow();
HDC hDC = GetDC(hWnd);

void RectangleShow(COLORREF Color, int x, int y, int w, int h)
{
    HPEN hPen = CreatePen(PS_SOLID, 2, Color);
    HBRUSH hBrush = GetStockBrush(NULL_BRUSH);

    SelectObject(hDC, hPen);
    SelectObject(hDC, hBrush);

    Rectangle(hDC, x, y, x + w, y + h);

    DeleteObject(hPen);
}

int main()
{
    int x = 100;
    int y = 100;

    int squareSize = 200;

    int width = 80;
    int height = 40;

    COLORREF background = GetPixel(hDC, 0, 0);

    // Движение вправо
    for (x = 100; x <= 100 + squareSize - width; x += 5)
    {
        RectangleShow(background, x - 5, y, width, height);

        width -= 1;

        if (width < 20)
            width = 20;

        RectangleShow(RGB(255, 0, 0), x, y, width, height);

        Sleep(50);
    }

    // Движение вниз
    for (y = 100; y <= 100 + squareSize - height; y += 5)
    {
        RectangleShow(background, x, y - 5, width, height);

        RectangleShow(RGB(255, 0, 0), x, y, width, height);

        Sleep(50);
    }

    // Движение влево
    for (x = 100 + squareSize - width; x >= 100; x -= 5)
    {
        RectangleShow(background, x + 5, y, width, height);

        width += 1;

        if (width > 80)
            width = 80;

        RectangleShow(RGB(255, 0, 0), x, y, width, height);

        Sleep(50);
    }

    // Движение вверх
    for (y = 100 + squareSize - height; y >= 100; y -= 5)
    {
        RectangleShow(background, x, y + 5, width, height);

        RectangleShow(RGB(255, 0, 0), x, y, width, height);

        Sleep(50);
    }

    cin.get();

    return 0;
}