LARGE_INTEGER freq;
LARGE_INTEGER start, end;
double tick;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&start);
calc1();
QueryPerformanceCounter(&end);
tick = (double) (end.QuadPart - start.QuadPart) / freq.QuadPart;
printf("1번 수행시간 = %f\n", tick);
QueryPerformanceCounter(&start);
calc2();
QueryPerformanceCounter(&end);
tick = (double) (end.QuadPart - start.QuadPart) / freq.QuadPart;
printf("2번 수행시간 = %f\n", tick);