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

double f(double x)
{
    return x*x+1000;
}
/*double privedenie_po_Y(double y) {
    double result = 100 * y + (double)(597/ 4);
    return result;
}*/
int main()
{
    float x;
    HDC hDC = GetDC(GetConsoleWindow());
    HWND hwnd = GetConsoleWindow();
    RECT Rect;
    GetWindowRect(hwnd, &Rect);
    double size_x = Rect.right - Rect.left - 40;
    double size_y = Rect.bottom - Rect.top - 50;
    cout << size_y;
    HPEN Pen = CreatePen(PS_SOLID, 4, RGB(255, 255, 255));
    SelectObject(hDC, Pen);
    double a = f(0);
    while (true)
    {
        GetWindowRect(hwnd, &Rect);
        double size_x = Rect.right - Rect.left - 40;
        double size_y = Rect.bottom - Rect.top - 50;
        MoveToEx(hDC, 0,  size_y / 2 + (a), NULL);
        LineTo(hDC, 1 * size_x, 1 * size_y / 2+(a));
        MoveToEx(hDC, 1 * size_x / 2, 0, NULL);
        LineTo(hDC, 1 * size_x / 2, 1 * size_y);
        for (x = -3.14; x <= 3.14; x += 0.01)
        {
            MoveToEx(hDC, 100 * x + 1 * size_x / 2, -100 * (f(x)- a) + 1 * size_y / 2, NULL);
            LineTo(hDC, 100 * x + 1 * size_x / 2, -100 * (f(x)- a) + 1 * size_y / 2);
        }
    }
    return 0;
}