// crt_clock.c
// This example prompts for how long
// the program is to run and then continuously
// displays the elapsed time for that period.
//
 
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
void sleep( clock_t wait );
 
int main( void )
{
   long    i = 6000000L;
   clock_t start, finish;
   double  duration;
 
   // Delay for a specified time.
   printf( "Delay for three seconds\n" );
   sleep( (clock_t)3 * CLOCKS_PER_SEC );
   printf( "Done!\n" );
 
/*
   // Measure the duration of an event.
   printf( "Time to do %ld empty loops is ", i );
   start = clock();
   while( i-- ) 
      ;
   finish = clock();
   duration = (double)(finish - start) / CLOCKS_PER_SEC;
   printf( "%2.1f seconds\n", duration );*/
   system("PAUSE");
}
 
// Pauses for a specified number of milliseconds.
void sleep( clock_t wait )
{
   clock_t goal;
   goal = wait + clock();
   while( goal > clock() )
      ;
}

#include <stdio.h>
#include <windows.h>
 
int main ( void )
{
  printf ( "Delay for three seconds\n" );
  Sleep ( 3000 );
  printf ( "Done!\n" );
}