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Is there a time difference function in c++

Posted on 2006-07-06
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Last Modified: 2006-11-18
Does anyone know if there is a function in c++ that will take two times and give the difference of those two times in milliseconds?

thanks
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Question by:rspiege1
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jkr earned 400 total points
ID: 17054467
'difftime()' does that:

/* DIFFTIME.C: This program calculates the amount of time
 * needed to do a floating-point multiply 10 million times.
 */

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

void main( void )
{
   time_t   start, finish;
   long loop;
   double   result, elapsed_time;

   printf( "Multiplying 2 floating point numbers 10 million times...\n" );
   
   time( &start );
   for( loop = 0; loop < 10000000; loop++ )
      result = 3.63 * 5.27;
   time( &finish );

   elapsed_time = difftime( finish, start );
   printf( "\nProgram takes %6.0f seconds.\n", elapsed_time );
}
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by:rspiege1
ID: 17055020
thanks for the help
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