clocktypeimp.cpp

这是学习《Data Structures Using C++》

#include <iostream>
#include "clockType.h"

using namespace std;

void clockType::setTime(int hours, int minutes, int seconds)
{
	if(0 <= hours && hours < 24)
		hr = hours;
	else 
		hr = 0;

	if(0 <= minutes && minutes < 60)
		min = minutes;
	else 
		min = 0;

	if(0 <= seconds && seconds < 60)
		sec = seconds;
	else 
		sec = 0;
}

void clockType::getTime(int& hours, int& minutes, int& seconds)
{
	hours = hr;
	minutes = min;
	seconds = sec;
}

void clockType::printTime() const
{
 	if(hr < 10)
	   cout<<"0";
	cout<<hr<<":";

	if(min < 10)
	   cout<<"0";
	cout<<min<<":";

	if(sec < 10)
	   cout<<"0";
	cout<<sec;
}

void clockType::incrementHours()
{
	hr++;
	if(hr > 23)
 	  hr = 0;
}

void clockType::incrementMinutes()
{
	min++;
	if(min > 59)
	{
	   min = 0;
	   incrementHours(); //increment hours
	}
}

void clockType::incrementSeconds()
{
    sec++;
	if(sec > 59)
	{
	   sec = 0;
	   incrementMinutes(); //increment minutes
	}
}

bool clockType::equalTime(const clockType& otherClock) const
{
   return(hr == otherClock.hr 
 	    && min == otherClock.min 
          && sec == otherClock.sec);
}

clockType::clockType(int hours, int minutes, int seconds)
{
	setTime(hours, minutes, seconds);
}

clockType::clockType()  //default constructor
{
	setTime(0, 0, 0);
}