// Example 14.11. Program to test delaySec                      
   
#include <iostream>   
#include <ctime>   

using namespace std;
   
int main()   
{   
   void delaySec(int seconds);
   
   int numSeconds;  /* number of seconds */
   
   for (numSeconds = 0; numSeconds < 4; numSeconds++)
   {
      cout << "A delay of " << numSeconds << " follows\n";
      delaySec(numSeconds);
   }
   cout << "Test ends\n";
   
   return 0;
}  
 
//
// Delay seconds number of seconds
// Pre:  seconds is a positive integer.
// Post: Execution was delayed seconds number of seconds.
//

void delaySec(int seconds)
{
   time_t curTime = time(static_cast<time_t *>(NULL));

   while(time(static_cast<time_t *>(NULL)) < curTime +
		 static_cast<time_t>(seconds));
}