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2014-第八周项目二-时间类的运算符重载

2014-04-15 17:00 211 查看
/*
*程序的版权和版本声明部分:
*Copyright(c)2014,烟台大学计算机学院学生
*All rights reserved.
*文件名称:
*作者:刘晓晓
*完成日期:2014年 04月14号
*版本号:v1.0
*对任务及求解方法的描述部分:
*输入描述: 无
*问题描述:时间类中的运算符重载
*程序输出:无
*问题分析:
*算法设计:
*/
#include <iostream>
using namespace std;
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();
//二目的比较运算符重载
bool operator > (CTime &t);
bool operator < (CTime &t);
bool operator >= (CTime &t);
bool operator <= (CTime &t);
bool operator == (CTime &t);
bool operator != (CTime &t);
//二目的加减运算符的重载
//返回t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 &t);
CTime operator-(CTime &t);//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

//二目赋值运算符的重载
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
};
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;
}
void CTime::display()
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
bool CTime::operator > (CTime &t)
{
if (hour>t.hour) return true;
if (hour<t.hour) return false;
if (minute>t.minute) return true;
if (minute<t.minute) return false;
if (second>t.second) return true;
return false;

}
bool CTime::operator < (CTime &t)
{

if (hour<t.hour) return true;
if (hour>t.hour) return false;
if (minute<t.minute) return true;
if (minute>t.minute) return false;
if (second<t.second) return true;
return false;

}
bool CTime::operator >= (CTime &t)
{
if(*this<t)
return false;
return true;
}
bool CTime::operator <= (CTime &t)
{
if(*this>t)
return false;
return true;

}
bool CTime::operator == (CTime &t)
{
if(hour==t.hour&&minute==t.minute&&second==t.second)
return true;
else
return false;

}
bool CTime::operator != (CTime &t)
{
if(hour!=t.hour||minute!=t.minute||second!=t.second)
return  true;
return false ;
}
CTime CTime::operator+(CTime &t)
{
int h,m,s;
s=second+t.second;

if (s>59)
{
s-=60;
m++;
}m=minute+t.minute;
if (m>59)
{
m-=60;
h++;
}
h=hour+t.hour;
if (h>23) h-=24;
CTime t3(h,m,s);
return t3;

}
CTime CTime::operator-(CTime &t)
{

int h,m,s;
s=second-t.second;
m=minute-t.minute;
h=hour-t.hour;
if (s<0)
{
s+=60;
m--;
}
if (m<0)
{
m+=60;
h--;
}
if (h<0) h+=24;
CTime t3(h,m,s);
return t3;

}
CTime CTime::operator+(int s)
{
int s1=s%60;
int m1=(s/60)%60;
int h1=s/3600;
CTime t3(h1,m1,s1);
return *this+t3;
}
CTime CTime::operator-(int s)
{
int  s1,m1,h1;
s1=s%60;
m1=(s/60)%60;
h1=s/3600;
CTime t3(h1,m1,s1);
return *this-t3;
}
CTime CTime::operator+=(CTime &c)
{
*this=*this+c;
return *this;
}
CTime CTime::operator-=(CTime &c)
{
*this=*this-c;
return *this;
}
CTime CTime::operator+=(int s)//返回s秒后的时间
{
*this=*this+s;
return *this;
}
CTime CTime::operator-=(int s)//返回s秒前的时间
{
*this=*this-s;
return *this;
}
int main()
{

CTime c1(11,20,25),c2(8,20,45),c3;
cout<<"c1:";
c1.display();
cout<<"c2:";
c2.display();
cout<<"比较两个时间大小"<<endl;
if (c1>c2) cout<<"c1>c2"<<endl;
if (c1<c2) cout<<"c1<c2"<<endl;
if (c1==c2) cout<<"c1=c2"<<endl;
if (c1!=c2) cout<<"c1!=c2"<<endl;
if (c1>=c2) cout<<"c1>=c2"<<endl;
if (c1<=c2) cout<<"c1<=2"<<endl;
cout<<endl;
c3=c1+c2;
cout<<"两时间相加;"<<endl;
c3.display();
c3=c1-c2;
cout<<"两时间相减;"<<endl;
c3.display();
cout<<"+100秒后的时间;"<<endl;
c3=c1+100;
c3.display();
cout<<"-400秒后的时间;"<<endl;
c3=c1-400;
c3.display();
cout<<"加个时间给自己"<<endl;
c1+=c2;
c1.display();
cout<<"减个时间给自己:"<<endl;
c1-=c2;
c1.display();
cout<<"加600秒给自己:"<<endl;
c1+=600;
c1.display();
cout<<"减200秒给自己:"<<endl;
c1-=200;
c1.display();
return 0;

}


烦了,,够了,,厌了。。有点
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