一个不错的计时器类

/* 
* Timer Class
* By Danny Battison
* gabehabe@hotmail.com
*/

#include <ctime>

class CTimer
{
    public: // everything is public for ease of access
        // begin/end variables
        clock_t begin;
        clock_t end;

        // variable declarations used for time calculation
        double elapTicks;
        double elapMilli, elapSeconds, elapMinutes;

        // constructor
        CTimer () {}
        //call myTimer.begin () to begin the timer
        void start() 
        {
            this->begin = clock () * CLK_TCK;
        }
        // call myTimer.stop () to stop the timer
        void stop () 
        {
            this->end   = clock () * CLK_TCK; getTimes ();
        }

        // call getTimes
        void getTimes ()
        {
            // variable definitions on to calculate time taken
            this->elapTicks   = this->end - this->begin; // stop the timer, and calculete the time taken
            this->elapMilli   = this->elapTicks/1000;     //milliseconds from Begin to End
            this->elapSeconds = this->elapMilli/1000;   //seconds from Begin to End
            this->elapMinutes = this->elapSeconds/60;   //minutes from Begin to End
        }
};