calculating time

gentleguy

dear all how to calculate time during processing using Time class, anyone has such code? thanks a lot.

gentleguy

David Crow

Are you talking about GetTickCount()?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

gentleguy

i just would like to know how to calculate time from start to end processing, which function i can use it? when i used start clock() and end clock(), and CLOCK_PER_SEC, after compiling, output showed didn't declare CLOCK_PER_SEC. but the time is very small after calculate, how to calculate? any road is ok for me. thanks

gentleguy

Paresh Chitte

Hi, Please refer below pseudocode,

long ltime = GetTickCount();

CallYourTimeTakingFunction();

TRACE("Time took = %li\n", GetTickCount() - ltime);

Or,

CTime startTime = CTime::GetCurrentTime();

CallYourTimeTakingFunction();

CTime endTime = CTime::GetCurrentTime();

CTimeSpan elapsedTime = endTime - startTime;

Hope this will server your purpose. Regards, Paresh.

gentleguy

#include <time.h> clock_t ckStart,ckEnd,duration =0.0; char buff[1000]; ckStart=clock(); .... ..... ckEnd=clock(); float fDuration=(float)(ckEnd-ckStart)/CLOCK_PER_SEC; sprintf(buff,"speed=%d ms",fAveduration); Message Box (buff,"Time"); what is wrong with these code? output showed no declare CLOCK_PER_SEC. what is problem. thanks

gentleguy

Paresh Chitte

gentleguy wrote:

float fDuration=(float)(ckEnd-ckStart)/CLOCK_PER_SEC;

Should be,

float fDuration=(float)(ckEnd-ckStart)/CLOCKS_PER_SEC;

Change CLOCK_PER_SEC to CLOCK**S**_PER_SEC. Regards, Paresh.

modified on Friday, May 16, 2008 6:55 AM