第八周实验报告2
* 程序头部注释开始* 程序的版权和版本声明部分
* Copyright (c) 2011, 烟台大学计算机学院学生
* All rights reserved.* 文件名称：
* 作 者： 时永杰
* 完成日期： 2012 年 4月 10日
* 版 本 号：v1.1
实现Time类中的运算符重载
T2.h
class CTime
{
private:
unsigned short int hour; // 时
unsigned short int minute; // 分
unsigned short int second; // 秒
public:
CTime(int h=0,int m=0,int s=0);
void setTime(int h,int m,int s);
void display();
//比较运算符(二目)的重载
bool operator > (CTime &t);
bool operator < (CTime &t);
bool operator >= (CTime &t);
bool operator <= (CTime &t);
bool operator == (CTime &t);
bool operator != (CTime &t);
//二目运算符的重载
CTime operator+(CTime &c);//返回c所规定的时、分、秒后的时间，例t1(8,20,25),t2(11,20,50)，t1+t2为:41:15
CTime operator-(CTime &c);//对照+理解
CTime operator+(int s);//返回s秒后的时间
CTime operator-(int s);//返回s秒前的时间
//一目运算符的重载
CTime operator++(int);//后置++，下一秒
CTime operator++();//前置++，下一秒
CTime operator--(int);//后置--，前一秒
CTime operator--();//前置--，前一秒
//赋值运算符的重载
CTime operator+=(CTime &c);
CTime operator-=(CTime &c);
CTime operator+=(int s);//返回s秒后的时间
CTime operator-=(int s);//返回s秒前的时间
};
main.cpp
#include <iostream>
#include "T2.h"
using namespace std;
void main()
{
CTime t1(8,20,25),t2(11,20,50),t;
cout<<"t1为：";
t1.display();
cout<<"t2为：";
t2.display();
cout<<"下面比较两个时间大小：\n";
if (t1>t2) cout<<"t1>t2"<<endl;
if (t1<t2) cout<<"t1<t2"<<endl;
if (t1==t2) cout<<"t1＝t2"<<endl;
if (t1!=t2) cout<<"t1≠t2"<<endl;
if (t1>=t2) cout<<"t1≥t2"<<endl;
if (t1<=t2) cout<<"t1≤t2"<<endl;
cout<<endl;
cout<<"时间的加减"<<endl;
t=t1+t2;
cout<<"t1+t2=";
t.display();
t=t2-t1;
cout<<"|t1-t2|=";
t.display();
cout<<"t1提前1000秒:";
t=t1-1000;
t.display();
cout<<"t2延时1000秒:";
t=t2+1000;
t.display();
++t1;
cout<<"++t1";
t1.display();
t=t1++;
cout<<"t1++";
t.display();
--t1;
cout<<"--t1";
t1.display();
t=t1--;
cout<<"t1--";
t.display();
t1+=t2;
cout<<"t1+=t2后t1=";
t1.display();
t1-=t2;
cout<<"t1-=t2后t1=";
t1.display();
cout<<"t1-=1000秒:";
t1-=1000;
t1.display();
cout<<"t2+=1000秒:";
t2+=1000;
t2.display();
system("PAUSE");
//下面自行设计对其他运算符的重载的测试
}
T22.cpp
#include <iostream>
#include "T2.h"
using namespace std;
void CTime::display()
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
CTime::CTime(int h,int m,int s)
{
hour=h;
minute=m;
second=s;
}
void CTime::setTime(int h,int m,int s)
{
hour=h;
minute=m;
second=s;
}
bool CTime::operator > (CTime &t)
{
if(hour>t.hour)
return true;
else if(hour==t.hour)
{
if (minute>t.minute)
return true;
else if(minute==t.minute)
{
if(second>t.second)
return true;
else
return false;
}
else
return false;
}
else
return false;
}
bool CTime::operator >= (CTime &t)
{
if(hour>t.hour)
return true;
else if(hour==t.hour)
{
if (minute>t.minute)
return true;
else if(minute==t.minute)
{
if(second>=t.second)
return true;
else
return false;
}
else
return false;
}
else
return false;
}
bool CTime::operator < (CTime &t)
{
if(hour<t.hour)
return true;
else if(hour==t.hour)
{
if (minute<t.minute)
return true;
else if(minute==t.minute)
{
if(second<t.second)
return true;
else
return false;
}
else
return false;
}
else
return false;
}
bool CTime::operator <= (CTime &t)
{
if(hour<t.hour)
return true;
else if(hour==t.hour)
{
if (minute<t.minute)
return true;
else if(minute==t.minute)
{
if(second<=t.second)
return true;
else
return false;
}
else
return false;
}
else
return false;
}
bool CTime::operator == (CTime &t)
{
if(hour==t.hour && second==t.second && minute==t.minute)
return true;
else
return false;
}
bool CTime::operator != (CTime &t)
{
if(hour==t.hour && second==t.second && minute==t.minute)
return false;
else
return true;
}
/*CTime CTime::operator+(CTime &c)
{
CTime d;
d.hour=hour+c.hour;
d.second=second+c.second;
d.minute=minute+c.minute;
if(d.second>=60)
{
d.minute=d.second/60;
d.second=d.second%60;
}
else if(d.minute>=60)
{
d.hour=d.hour/60;
d.minute=d.minute%60;
}
else if(d.hour>=24)
hour=hour%24;
return d;
}*/
CTime CTime::operator-(CTime &c)
{
CTime d;
int t1,t2,t3;
t1=hour*3600+minute*60+second;
t2=c.hour*3600+c.minute*60+c.second;
t3=t1-t2;
d.hour=t3/3600;
d.minute=(t3-d.hour*3600)/60;
d.second=t3-d.hour*3600-d.minute*60;
return d;
}
CTime CTime::operator+(CTime &c)
{
CTime d;
int t1,t2,t3;
t1=hour*3600+minute*60+second;
t2=c.hour*3600+c.minute*60+c.second;
t3=t1+t2;
d.hour=t3/3600;
d.minute=(t3-d.hour*3600)/60;
d.second=t3-d.hour*3600-d.minute*60;
return d;
}
CTime CTime::operator+(int s)
{
CTime d;
int t1,t2,t3;
t1=s;
t2=hour*3600+minute*60+second;
t3=t1+t2;
d.hour=t3/3600;
d.minute=(t3-d.hour*3600)/60;
d.second=t3-d.hour*3600-d.minute*60;
return d;
}
CTime CTime::operator-(int s)
{
CTime d;
int t1,t2,t3;
t1=s;
t2=hour*3600+minute*60+second;
t3=t2-s;
d.hour=t3/3600;
d.minute=(t3-d.hour*3600)/60;
d.second=t3-d.hour*3600-d.minute*60;
return d;
}
CTime CTime::operator++()//前置++
{
if(++second>=60)
{
second-=60;
++minute;
if(minute>=60)
minute-=60;
++hour;
if (hour==24)
hour=0;
}
return *this;
}
CTime CTime::operator++(int)//后置++
{
CTime temp(*this);
second++;
if(second>=60)
{
second-=60;
++minute;
if(minute>=60)
minute-=60;
++hour;
if (hour==24)
hour=0;
}
return temp;
}
CTime CTime::operator--()//前置--
{
if(second==0)
{
minute--;
second=59;
}
else
second-=1;
return *this;
}
CTime CTime::operator--(int)//后置--
{
CTime temp(*this);
if(second==0)
{
minute--;
second=59;
}
else
second-=1;
return *this;
}
CTime CTime::operator+=(CTime &c)
{
int t1,t2,t3;
t1=hour*3600+minute*60+second;
t2=c.hour*3600+c.minute*60+c.second;
t3=t1+t2;
hour=t3/3600;
minute=(t3-hour*3600)/60;
second=t3-hour*3600-minute*60;
return *this;
}
CTime CTime::operator-=(CTime &c)
{
int t1,t2,t3;
t1=hour*3600+minute*60+second;
t2=c.hour*3600+c.minute*60+c.second;
t3=t1-t2;
hour=t3/3600;
minute=(t3-hour*3600)/60;
second=t3-hour*3600-minute*60;
return *this;
}
CTime CTime::operator+=(int s)
{
int t1,t2,t3;
t1=s;
t2=hour*3600+minute*60+second;
t3=t1+t2;
hour=t3/3600;
minute=(t3-hour*3600)/60;
second=t3-hour*3600-minute*60;
return *this;
}
CTime CTime::operator-=(int s)
{
int t1,t2,t3;
t1=s;
t2=hour*3600+minute*60+second;
t3=t2-t1;
hour=t3/3600;
minute=(t3-hour*3600)/60;
second=t3-hour*3600-minute*60;
return *this;
}
