#define STRICT
#include <windows.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>

HDC hdc;
int MAXX, MAXY;

void REFRESH()
{
	::ReleaseDC(0, hdc);
	hdc=::GetDC(0);
}

void PLOT(int x, int y)
{
	::SetPixelV(hdc, x, y, RGB(0, 0, 0));
}

void LINE(int x, int y, int x2, int y2)
{
	::MoveToEx(hdc, x, y, NULL);
	::LineTo(hdc, x2, y2);
}

void BEGIN()
{
	hdc=::GetDC(0);
	MAXX=::GetDeviceCaps(hdc, HORZRES);
	MAXY=::GetDeviceCaps(hdc, VERTRES);
	::Rectangle(hdc, 0, 0,MAXX, MAXY);
}

void END()
{
	::ReleaseDC(0, hdc);
}

int WINAPI WinMain(HINSTANCE hinst, HINSTANCE, LPSTR command, int showtype)
{
	BEGIN();
	int offx=20, offy=40;
	LINE(offx, 10, offx, MAXY-offy);
	LINE(offx, MAXY-offy, MAXX-10, MAXY-offy);
	for(int i=0; i<435; i++)
	{
		PLOT(offx+i, MAXY-offy-35*sin(double(i)/23.0));
		REFRESH();
	}
	END();
	char ch;
	scanf("%c", &ch);
	return 0;
}