#include <windows.h>
#include <stdio.h>
#include <assert.h>

void test_sleep(DWORD time)
{
	static DWORD ticks[200];

	printf("GetTickCount() deltas between Sleep(%d)\n", time);

	for (int i = 0; i < ARRAYSIZE(ticks); i++) {
		ticks[i] = GetTickCount();
		Sleep(time);
	}

	for (int i = 1; i < ARRAYSIZE(ticks); i++)
		printf("%02d ", ticks[i] - ticks[i - 1]);

	printf("\n\n");
}

int main()
{
	test_sleep(0);
	test_sleep(1);
	test_sleep(21);
	test_sleep(40);

	assert(TIMERR_NOERROR == timeBeginPeriod(1));
	printf("timeBeginPeriod(1);");

	test_sleep(0);
	test_sleep(1);
	test_sleep(21);
	test_sleep(40);

	return 0;
}