第9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);

//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&);
};

ostream& operator << (ostream& output, CTime& t)
{
cout << t.hour << ":" << t.minute << ":" << t.second << endl;
return output;
}

istream& operator >> (istream& input, CTime& t)
{
cout << "请输入要置时间的时、分、秒:";
input >> t.hour >> t.minute >> t.second;
return input;
}

void main()
{
CTime t1, t2, t, t3;
cin >> t1 >> t2;
cout << "t1为: " << t1;
cout << "t2为: " << t2;

cout << "\n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;

t = t1 + t2;
cout << "t1 + t2 = " << t;
t3 = t2 - t1;
cout << "t2 - t1 = " << t3;

int n;
cout << endl;
cout << t;
cout <<"请输入您想在原有时间之上增加的秒数：";
cin >> n;
t = t + n;
cout << t;

int m;
cout << "请输入您想在当前时间之上减少的秒数：";
cin >> m;
t = t - m;
cout << t;

cout << endl;

t = t ++;
cout << "t++ = " << t;

t = ++ t;
cout << "++t =" << t;

cout << endl;

t = t --;
cout << "t-- = " << t;

t = -- t;
cout << "--t = " << t;

cout << endl;

t = t1 += t2;
cout << "t1 += t2 = " << t;

t = t2 -= t1;
cout << "t2 -= t1 = " << t;

int s;
cout << endl;
cout << t;
cout << "请输入您想在当前时间之上增加的秒数： ";
cin >> s;
t = t += s;
cout << t;

int s1;
cout << "请输入您想在当前时间之上减少的秒数： ";
cin >> s1;
t = t -= s1;
cout << t;
system("pause");
}

CTime::CTime(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 && 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;
else
return false;
}

CTime CTime::operator + (CTime &c)
{
CTime c1;
c1.hour = hour + c.hour;
c1.minute = minute + c.minute;
c1.second = second + c.second;
if(c1.second >= 60)
{
c1.second = c1.second - 60;
c1.minute ++;
if(c1.minute >= 60)
{
c1.minute = c1.minute - 60;
c1.hour ++;
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}
}
}
if(c1.minute >= 60)
{
c1.minute = c1.minute - 60;
c1.hour ++;
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}
}
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}

return c1;
}
CTime CTime::operator - (CTime &c)
{
CTime c1;
int sec, sec1, sec2;
sec1 = second + minute * 60 + hour * 3600;
sec2 = c.second + c.minute * 60 + c.hour * 3600;
sec = sec1 - sec2;
c1.hour = sec / 3600;
sec = sec % 3600;
c1.minute = sec / 60;
c1.second = sec % 60;

return c1;
}

CTime CTime::operator + (int s)
{
CTime c;
c.second = second + s;
if(c.second >= 60)
{
c.minute = minute + c.second / 60;
{
if(c.minute >= 60)
{
c.hour = hour + c.minute / 60;
c.minute = c.minute % 60;
}
else
c.hour = hour;
}
c.second = c.second % 60;
}
else
{
c.minute = minute;
c.hour = hour;
}
return c;
}
CTime CTime::operator - (int s)
{
CTime c;
int sec;
sec = second + minute * 60 + hour * 3600 - s;
c.hour = sec / 3600;
sec = sec % 3600;
c.minute = sec / 60;
sec = sec % 60;
c.second = sec;

return c;
}

CTime CTime::operator ++ (int)  //后置++，下一秒
{
CTime c;
c.second = second ++;
c.minute = minute;
c.hour = hour;
return c;
}
CTime CTime::operator ++ ()//前置++，下一秒
{
CTime c;
c.second = ++ second;
c.minute = minute;
c.hour = hour;
return c;
}
CTime CTime::operator -- (int)  //后置++，下一秒
{
CTime c;
c.second = second --;
c.minute = minute;
c.hour = hour;
return c;
}
CTime CTime::operator -- ()//前置++，下一秒
{
CTime c;
c.second = -- second;
c.minute = minute;
c.hour = hour;
return c;
}

CTime CTime::operator += (CTime &c)
{
CTime c1;
c1.hour = hour + c.hour;
c1.minute = minute + c.minute;
c1.second = second + c.second;
if(c1.second >= 60)
{
c1.second = c1.second - 60;
c1.minute ++;
if(c1.minute >= 60)
{
c1.minute = c1.minute - 60;
c1.hour ++;
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}
}
}
if(c1.minute >= 60)
{
c1.minute = c1.minute - 60;
c1.hour ++;
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}
}
if(c1.hour >= 24)
{
c1.hour = c1.hour - 24;
}

return c1;
}
CTime CTime::operator -= (CTime &c)
{
CTime c1;
int sec, sec1, sec2;
sec1 = second + minute * 60 + hour * 3600;
sec2 = c.second + c.minute * 60 + c.hour * 3600;
sec = sec1 - sec2;
c1.hour = sec / 3600;
sec = sec % 3600;
c1.minute = sec / 60;
c1.second = sec % 60;

return c1;
}

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

return c;
}