[C Language] program execution time measurement

During the creation of a big data file today, in order to measure the Creation Time, I studied how to obtain the time in windows.

1. Timing of 55 ms Resolution:

Header file: # include

GetTickCount () usage:

DWORD dwStart = GetTickCount ();
Functon (); // Your program.
DWORD dwEnd = GetTickCount ();
DWORD dwTimes = dwEnd-dwStart;

2. 10 ms resolution timing:

Header file:

# Include
# Include
# Pragma comment (lib, "winmm. lib ")

TimeGetTime () usage:

DWORD dwStart = timeGetTime ();
Function; // Your program
DWORD dwEnd = timeGetTime ();
DWORD dwTimes = dwEnd-dwStart;

3. 1 ms resolution timing:

Header file:

# Include

Clock () usage:

Clock_t s_time = clock ();

Function ();

Clock_t e_time = clock ();

Clock_t time = e_time-s_time;

 

 

Here with the full information: http://blog.csdn.net/cometdlut/article/details/5839348