/* (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:Time
* 作者:郭岩岩
* 完成日期:2012年4月10日
* 版本号:vc.1
* 对任务及求解方法的描述部分
* 输入描述:
* 问题描述:
* 程序输出:
*程序头部的注释结束
*/
#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):hour(h),minute(m),second(s){}
void setTime(int h,int m,int s);
void display();
int get_add();
//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
};
//下面实现所有的运算符重载代码。
//为简化编程,请注意通过调用已有函数,利用好各函数之间的关系
int CTime::get_add()
{
int add;
add=second+60*minute+60*60*hour;
return add;
}
void CTime::setTime(int h,int m,int s)
{
hour=h;
minute=m;
second=s;
}
void CTime::display()
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
//比较运算符(二目)的重载
bool CTime::operator > (CTime &t)
{
if(get_add()>t.get_add ())
return true;
else
return false;
}
bool CTime::operator < (CTime &t)
{
if(get_add()<t.get_add ())
return true;
else
return false;
}
bool CTime::operator >= (CTime &t)
{
if(get_add()<t.get_add ())
return false;
else
return true;
}
bool CTime::operator <= (CTime &t)
{
if(get_add()>t.get_add ())
return false;
else
return true;
}
bool CTime::operator == (CTime &t)
{
if(get_add()>t.get_add ()||get_add()<t.get_add ())
return false;
else
return true;
}
bool CTime::operator != (CTime &t)
{
if(get_add()==t.get_add ())
return false;
else
return true;
}
//二目运算符的重载
CTime 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 c2;
c2.get_add() =get_add()+c.get_add() ;
c2.hour =c2.get_add() /3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add()-c2.hour *3600)%60;
return c2;
}
CTime CTime::operator-(CTime &c)//对照+理解
{
CTime c2;
c2.get_add() =get_add()-c.get_add();
c2.hour =c2.get_add() /3600;
c2.minute =(c2.get_add ()-c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
CTime CTime::operator+(int s)//返回s秒后的时间
{
CTime c2;
c2.get_add() =get_add()+s;
c2.hour =c2.get_add ()/3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add ()-c2.hour *3600)%60;
return c2;
}
CTime CTime::operator-(int s)//返回s秒前的时间
{
CTime c2;
c2.get_add() =get_add()-s;
c2.hour =c2.get_add ()/3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
//一目运算符的重载
CTime CTime::operator++(int)//后置++,下一秒
{
CTime temp(*this);
second++;
if(second>=60)
{
second-=60;
++minute;
}
return temp;
}
CTime CTime::operator++()//前置++,下一秒
{
if(++second>=60)
{
second-=60;
++minute;
}
return *this;
}
CTime CTime::operator--(int)//后置--,前一秒
{
{
CTime temp(*this);
second--;
if(second<0)
{
second=59;
--minute;
}
return temp;
}
}
CTime CTime::operator--()//前置--,前一秒
{
{
if(--second<0)
{
second=59;
--minute;
}
return *this;
}
}
//赋值运算符的重载
CTime CTime::operator+=(CTime &c)
{
CTime c2;
c2.get_add() =get_add()+c.get_add() ;
c2.hour =c2.get_add ()/3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
CTime CTime::operator-=(CTime &c)
{
CTime c2;
c2.get_add() =get_add()-c.get_add() ;
c2.hour =c2.get_add() /3600;
c2.minute =(c2.get_add()-c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
CTime CTime::operator+=(int s)//返回s秒后的时间
{
CTime c2;
c2.get_add() =get_add()+s;
c2.hour =c2.get_add() /3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
CTime CTime::operator-=(int s)//返回s秒前的时间
{
CTime c2;
c2.get_add =get_add()-s;
c2.hour =c2.get_add() /3600;
c2.minute =(c2.get_add() -c2.hour *3600)/60;
c2.minute =(c2.get_add() -c2.hour *3600)%60;
return c2;
}
void main()
{
CTime t1(8,20,25),t2(11,20,50),t;
int s=2;
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;
//下面自行设计对其他运算符的重载的测试
t=t1+t2;
cout<<"t1+t2=";
t.display ();
t=t1-t2;
cout<<"t1-t2=";
t.display ();
t=t1+s;
cout<<"t1+s=";
t.display ();
t=t1-s;
cout<<"t1-s=";
t.display ();
t1++;
cout<<"t1++ =";
t1.display ();
++t1;
cout<<"++t1";
t1.display ();
t1--;
cout<<"t1--";
t1.display ();
--t1;
cout<<"--t1";
t1.display ();
t1+=t2;
cout<<"t1+=t2";
t1.display ();
t1-=t2;
cout<<"t1-=t2";
t1.display ();
t1+=5;
cout<<"t1+=5";
t1.display ();
t1+=5;
cout<<"t1+=5";
t1.display ();
}
c:\my documents\visual studio 2008\projects\k\k\j.cpp(129) : error C2106: '=' : left operand must be l-value
c2.get_add() =get_add()+c.get_add() ;
是函数和函数不能运算吗???
#inclu
#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):hour(h),minute(m),second(s){}
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 h);//返回s秒后的时间
CTime operator-(int h);//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 h);//返回s秒后的时间
CTime operator-=(int h);//返回s秒前的时间
};
//下面实现所有的运算符重载代码。
//为简化编程,请注意通过调用已有函数,利用好各函数之间的关系
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 * 3600 + minute * 60 + second > t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
bool CTime::operator<(CTime &t)
{
if(hour * 3600 + minute * 60 + second < t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
bool CTime::operator>=(CTime &t)
{
if(hour * 3600 + minute * 60 + second >= t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
bool CTime::operator<=(CTime &t)
{
if(hour * 3600 + minute * 60 + second <= t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
bool CTime::operator==(CTime &t)
{
if(hour * 3600 + minute * 60 + second == t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
bool CTime::operator!=(CTime &t)
{
if(hour * 3600 + minute * 60 + second != t.hour * 3600 + t.minute * 60 + second)
{
return true;
}
else
{
return false;
}
}
CTime CTime::operator+(CTime &c)
{
hour=c.hour+hour;
minute=c.minute+minute;
second=c.second+second;
if (second>60)
{
minute=minute+(second/60);
second=second%60;
}
if(minute>60)
{
minute=minute%60;
hour=hour+minute/60;
}
if(hour>24)
{
hour=hour%24;
}
return (*this);
}
CTime CTime::operator-(CTime &c)
{
if(c.second<second)
{
minute=minute-1;
second=c.second+60-second;
}
else
{
second=c.second-second;
}
if(c.minute<minute)
{
hour=hour-1;
minute=c.minute+60-minute;
}
else
{
minute=c.minute-minute;
}
hour=c.hour-hour;
return (*this);
}
CTime CTime::operator+(int h)
{
second=second+hour;
if(second>60)
{
second=second%60;
minute=minute+second/60;
}
if(minute>60)
{
minute=minute%60;
minute=minute+minute/60;
}
if(hour>24)
{
hour= hour%24;
}
return (*this);
}
CTime CTime::operator-(int h)
{
int T;
T = hour * 3600 + minute *60 + second - h;
hour = T / 3600;
T = T % 3600;
minute = T / 60;
second = T % 60;
return (*this);
}
CTime CTime::operator ++(int )
{
return *this;
*this+1;
}
CTime CTime::operator ++()
{
*this+1;
return *this;
}
CTime CTime::operator --(int )
{
return*this;
*this-1;
}
CTime CTime::operator --()
{
*this-1;
return*this;
}
CTime CTime::operator+=(CTime &c)
{
return(*this+c );
}
CTime CTime::operator-=(CTime &c)
{
return(*this-c);
}
CTime CTime::operator+=(int h)
{
return(*this+h);
}
CTime CTime::operator-=(int h)
{
return (*this-h);
}
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;
//下面自行设计对其他运算符的重载的测试
t = t1;
t = t + t2;
cout << "t1 + t2 = ";
t.display();
t = t1;
t = t - t2;
cout << "t1 - t2 = ";
t.display();
t = t1;
t = t + 5;
cout<< "t1 + 5 = ";
t .display();
t = t2;
t = t - 5;
cout<< "t2 - 5 = " ;
t.display();
t = t1;
t = t ++;
cout << endl;
cout << "t1++ = ";
t.display();
t = t1;
t = ++t;
cout << "++t1 = ";
t.display();
t = t2;
t = t --;
cout << "t1-- = ";
t.display();
t = t2;
t = --t;
cout << "--t1 = ";
t.display();
t = t1;
t +=t2;
cout << "t1 += t2,t1 = " ;
t.display();
t = t1;
t -= t2;
cout << "t1 -= t2,t1 = " ;
t.display();
t = t1;
t += 5;
cout << "t1 += 8 = " ;
t.display();
t = t1;
t -= 6;
cout << "t1 -= 6 = " ;
t.display();
system("pause");
}