//--------------------------------------------------------------------
//
//  Laboratory 15                                          timer.cpp
//
//  SOLUTION: Implementation of the Timer ADT
//
//--------------------------------------------------------------------

#include <time.h>
#include <iostream.h>
#include "timer.h"

//--------------------------------------------------------------------

Timer::Timer ()

// Initializes the timer.

{
    startTime = 0;
    stopTime  = 0;
}

//--------------------------------------------------------------------

void Timer::start ()

// Starts the timer.

{
    startTime = clock();
}

//--------------------------------------------------------------------

void Timer::stop ()

// Stops the timer.

{
    stopTime = clock();
}

//--------------------------------------------------------------------

clock_t Timer::elapsedTime () const

// Computes the length of the time interval from startTime to
// stopTime (in clock ticks).

{
    return  stopTime - startTime;
}