Question

C++中Time类的类声明及成员函数的实现。

题目：“试写出Time类的类声明及成员函数的实现。要求：在Time类中包含3个数据分量，即时（hour）、分（minute）和秒（second）。在类的成员函数中应包括存（用set开头）、取（用get开头）各个数据分量和完整时间的操作；按上下午各12小时或按24小时打印时间的函数；有默认值的构造函数等。默认值以0时0分0秒为准。”
本人刚刚接触C++的类，有会的请予以指导，多谢。

Answer 1

刚写的代码，累死了！win32应用程序
//头文件

// Time.h: interface for the CTime class.
//

#if !defined(AFX_TIME_H__4B366AE3_5AB6_48B2_B2ED_4CCBCEFF08B5__INCLUDED_)
#define AFX_TIME_H__4B366AE3_5AB6_48B2_B2ED_4CCBCEFF08B5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include <stdio.h>
class CTime
{
public:
char* GetTime(BOOL bl);
void SetTime(int h,int m,int s);
void SetSecond(int s);
void SetMinute(int m);
void SetHour(int h);
int GetSecond();
int GetMinute();
int GetHour();
CTime();
virtual ~CTime();
private:
int hour;
int minute;
int second;

};

#endif // !defined(AFX_TIME_H__4B366AE3_5AB6_48B2_B2ED_4CCBCEFF08B5__INCLUDED_)

//源文件

// Time.cpp: implementation of the CTime class.
//

#include "stdafx.h"
#include "Time.h"

CTime::CTime()
{
hour=0;
minute=0;
second=0;
}

CTime::~CTime()
{

}

int CTime::GetHour()
{
return hour;
}

int CTime::GetMinute()
{
return minute;
}

int CTime::GetSecond()
{
return second;
}

void CTime::SetHour(int h)
{
if(h<0) return;
if(h>23) return;
hour=h;
}

void CTime::SetMinute(int m)
{
if(m<0) return;
if(m>59) return;
minute=m;
}

void CTime::SetSecond(int s)
{
if(s<0) return;
if(s>59) return;
second=s;
}

void CTime::SetTime(int h, int m, int s)
{
SetHour(h);
SetMinute(m);
SetSecond(s);
}
char* CTime::GetTime(BOOL bl)
{
static char buf[20];
memset(buf,0,20);

if(bl){
sprintf(buf,"%d时%d分%d秒",GetHour(),GetMinute(),GetSecond());
}
else
{
if(hour<12)
sprintf(buf,"上午%d时%d分%d秒",GetHour(),GetMinute(),GetSecond());
sprintf(buf,"下午%d时%d分%d秒",GetHour(),GetMinute(),GetSecond());
}
return buf;
}

Answer 2

CTime::CTime()
{
hour=0;
minute=0;
second=0;

}

CTime::~CTime()
{

}

void CTime::setHour(int hour)
{
this->hour=hour;
}

int CTime::getHour()
{
return this->hour;
}

void CTime::setMinute(int minute)
{
this->minute=minute;
}

int CTime::getMinute()
{
return this->minute;
}

void CTime::setSecond(int second)
{
this->second=second;
}

int CTime::getSecond()
{
return this->second;
}

void CTime::ShowTo12()
{
if(this->hour<10)
{
cout<<"0"<<hour<<" hours: ";

if(minute<10)
cout<<"0"<<minute<<" minute: ";
else
cout<<minute<<" minute: ";
if(second<10)
cout<<"0"<<second<<" second: ";
else
cout<<second<<" second am"<<endl;
}
if(this->hour>=10&&this->hour<=12)
{
cout<<hour<<" hours: ";

if(minute<10)
cout<<"0"<<minute<<" minute: ";
else
cout<<minute<<" minute: ";
if(second<10)
cout<<"0"<<second<<" second: ";
else
cout<<second<<" second am"<<endl;
}
if(this->hour>=10&&this->hour>12)
{
cout<<hour-12<<" hours: ";

if(minute<10)
cout<<"0"<<minute<<" minute: ";
else
cout<<minute<<" minute: ";
if(second<10)
cout<<"0"<<second<<" second: ";
else
cout<<second<<" second pm"<<endl;
}

}

void CTime::ShowTo24()
{
if(hour<10)
cout<<"0"<<hour<<" hour: ";
else
cout<<hour<<" hour: ";

if(minute<10)
cout<<"0"<<minute<<" minute: ";
else
cout<<minute<<" minute: ";
if(second<10)
cout<<"0"<<second<<" second: ";
else
cout<<second<<" second"<<endl;

}