windows-time-meassure.cpp

#include <Windows.h>
void main() {
	double PCFreq = 0.0;
	__int64 CounterStart = 0;

	LARGE_INTEGER fr, start, end;
	BOOL res = QueryPerformanceFrequency(&fr);
	PCFreq = double(fr.QuadPart) / 1000.0;

	QueryPerformanceCounter(&start);

	{
		int x = 0;
		for (int c = 0; c < 1000000; c++) {
			x ^= c;
		}
	}
	
	QueryPerformanceCounter(&end);
	double time = double(end.QuadPart - start.QuadPart) / PCFreq;
	cout << time;
	return 0;
}