第九周实验报告2

#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();
//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
friend ostream& operator << (ostream&, CTime&);
friend istream& operator >> (istream&, CTime&);
};
//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;
}

CTime::CTime(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( (hour * 3600 + minute * 60 + second) > (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}

bool CTime::operator < (CTime &t)
{
if( (hour * 3600 + minute * 60 + second) < (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}

bool CTime::operator >= (CTime &t)
{
if( (hour * 3600 + minute * 60 + second) >= (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}

bool CTime::operator <= (CTime &t)
{
if( (hour * 3600 + minute * 60 + second) <= (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}

bool CTime::operator == (CTime &t)
{
if( (hour * 3600 + minute * 60 + second) == (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}

bool CTime::operator != (CTime &t)
{
if( (hour * 3600 + minute * 60 + second) != (t.hour * 3600 + t.minute * 60 + t.second ))
{
return true;
}
else
{
return false;
}
}
//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
{
int a,b, e, d;
CTime t;
a = hour * 3600 + minute * 60 + second;
b = c.hour * 3600 + c.minute * 60 + c.second;
e = a + b;
t.hour = e / 3600;
d = e % 3600;
t.minute = d / 60;
t.second = d % 60;
if( t.hour > 12 )
{
t.hour -= 12;
}
return t;
}

CTime CTime::operator-(CTime &c)//对照+理解
{
int a,b, e, d;
CTime t;
a = hour * 3600 + minute * 60 + second;
b = c.hour * 3600 + c.minute * 60 + c.second;
e = a - b;

t.hour = e / 3600;
d = e % 3600;
t.minute = d / 60;
t.second = d % 60;
if( t.hour > 12 )
{
t.hour -= 12;
}
return t;
}

CTime CTime::operator+(int s)//返回s秒后的时间
{
int a, c, d;
CTime t;
a = hour * 3600 + minute * 60 + second;
c = a + s;
t.hour = c / 3600;
d = c % 3600;
t.minute = d / 60;
t.second = d % 60;
if( t.hour > 12 )
{
t.hour -= 12;
}
return t;
}

CTime CTime::operator-(int s)//返回s秒前的时间
{
int a, c, d;
CTime t;
a = hour * 3600 + minute * 60 + second;
c = a - s;
t.hour = c / 3600;
d = c % 3600;
t.minute = d / 60;
t.second = d % 60;
if( t.hour > 12 )
{
t.hour -= 12;
}
return t;
}

//一目运算符的重载
CTime CTime::operator++(int)//后置++，下一秒
{
CTime t(*this);
second++;
if( second >= 60)
{
second -= 60;
++minute;
if( minute >= 60)
{
minute -= 60;
++hour;
if( hour >= 12)
{
hour -= 12;
}
}
}
return t;
}

CTime CTime::operator++()//前置++，下一秒
{

if( ++second >= 60)
{
second -= 60;
++minute;
if( minute >= 60)
{
minute -= 60;
++hour;
if( hour >= 12)
{
hour -= 12;
}
}
}
return *this;
}

CTime CTime::operator--(int)//后置--，前一秒
{
CTime t(*this);
second--;
if( second < 0)
{
second = 59;
--minute;
if( minute < 0)
{
minute = 59;
--hour;
if( hour < 0)
{
hour = 11;
}
}
}
return t;
}
CTime CTime::operator--()//前置--，前一秒
{
if( --second < 0)
{
second = 59;
--minute;
if( minute < 0)
{
minute = 59;
--hour;
if( hour < 0)
{
hour = 11;
}
}
}
return (*this);
}

//赋值运算符的重载
CTime CTime::operator+=(CTime &c)
{
int a,b, e, d;

a = hour * 3600 + minute * 60 + second;
b = c.hour * 3600 + c.minute * 60 + c.second;
e = a + b;
hour = e / 3600;
d = e % 3600;
minute = d / 60;
second = d % 60;
if( hour > 12 )
{
hour -= 12;
}
return (*this);
}

CTime CTime::operator-=(CTime &c)
{
int a,b, e, d;
//CTime t;
a = hour * 3600 + minute * 60 + second;
b = c.hour * 3600 + c.minute * 60 + c.second;
e = a - b;
hour = e / 3600;
d = e % 3600;
minute = d / 60;
second = d % 60;
if( hour > 12 )
{
hour -= 12;
}
return (*this);
}

CTime CTime::operator+=(int s)//返回s秒后的时间
{

unsigned short int a, c, d;
//CTime t;
a = hour * 3600 + minute * 60 + second;
c = a + s;
hour = c / 3600;
d = c % 3600;
minute = d / 60;
second = d % 60;
if( hour > 12 )
{
hour -= 12;
}
return (*this);
}
CTime CTime::operator-=(int s)//返回s秒前的时间
{
int a, c, d;
//CTime t;
a = hour * 3600 + minute * 60 + second;
c = a - s;

hour = c / 3600;
d = c % 3600;
minute = d / 60;
second = d % 60;
if( hour > 12 )
{
hour -= 12;
}
return (*this);
}
ostream& operator << (ostream &output, CTime &t)
{
output << t.hour << ":" << t.minute << ":" << t.second ;
return output;
}

istream& operator >> (istream &input, CTime &t)
{
char a, b;
cout << "输入时：分：秒 ";
input >> t.hour >> a >> t.minute >> b >> t.second ;

while(a != ':' && b !=':')
{
cout << "cuiowo";
input >> t.hour >> a >> t.minute >> b >> t.second ;
}

return input;
}

void main()
{
CTime t1,t2,t;
cin >> t1 >> t2;
cout <<"t1为：";
cout << t1 << endl;
//t1.display();
cout<<"t2为：";
cout << t2 << endl;
//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();
cout << t << endl;
t = t2 - t1;
cout << "t2 - t1 =";
//t.display();
cout << t << endl;
t = t1 + 30;
cout << "t1 + 30 =";
//t.display();
cout << t << endl;
t = t2 - 30;
cout <<"t2 - 30 =";
//t.display();
cout << t << endl;
t = ++ t1;
cout << "++ t1 =";
//t.display ();
cout << t << endl;
cout << "t1 =";
//t1.display ();
cout << t1 << endl;
t = -- t1;
cout << "-- t1 =";
//t.display ();
cout << t << endl;
cout << "t1 =";
//t1.display ();
cout << t << endl;
t = t1++;
cout << "t1++ =";
//t.display ();
cout << t << endl;
cout << "t1 =";
//t1.display ();
cout << t1 << endl;
t = t1--;
cout << "t1-- =";
//t.display ();
cout << t << endl;

cout<<"t1为：";
//t1.display();
cout << t1 << endl;
cout<<"t2为：";
//t2.display();
cout << t2 << endl;
t2 -= t1;
cout << "(t2 -= t1)=";
//t2.display ();
cout << t2 << endl;

cout<<"t1为：";
//t1.display();
cout << t1 << endl;
cout<<"t2为：";
//t2.display();
cout << t2 << endl;
t = t2;
t += t1;
cout << "(t2 += t1)=";
//t.display ();
cout << t << endl;
system("pause");
}