Xref: news2.mv.net comp.os.msdos.djgpp:4646
From: fwk AT pacific DOT net DOT sg
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Why doesnt this work!
Date: Wed, 05 Jun 1996 11:26:00 GMT
Organization: Pacific Internet, Singapore
Lines: 52
Message-ID: <4p3uct$h50@raffles.technet.sg>
References: <4p5btk$5ic AT news DOT cybermax DOT net>
NNTP-Posting-Host: max85ppp32.pacific.net.sg
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

riggscl AT one DOT net (blah) wrote:

:>Can anyone tell me why this code doesnt work in djgpp.


:>#include <time.h>
:>#include <stdio.h>
:>#include <dos.h>

:>int main(void)
:>{
:>   clock_t start, end;
:>   start = clock();

:>   delay(2000);

:>   end = clock();
:>   printf("The time was: %f\n", (end - start) / CLK_TCK);

:>   return 0;
:>}

:>When i run this after compiling in gcc it always prints 0.00000!
:>I compiled it with  ->   gcc timer.c -otimer.exe
:>When i compile in borland c 3.1 or microsoft c 1.0 it works fine and give the 
:>expected result(some floating point number - about 2.?????)

:>any ideas?

:>Chris Riggs
:>riggscl AT one DOT net

Try this

  ...
  clock_t start, end;
  double timetaken;

  start = clock();
  delay(2000);
  end = clock();

  timetaken=(end-start)/CLK_TCK;
  printf("The time was: %f\n", timetaken);
  ...

It works for me. I guess somehow printf truncated the value.
Correct me if I am wrong.