/*
*程序的版权和版本号声明部分:
*Copyright(c)2014。烟台大学计算机学院学生
*All rights reserved.
*文件名:
*作者:赵加响
*完毕日期:2014 年 4月22 日
*版本号号:v1.0
*对任务及求解方法的描写叙述部分:
*输入描写叙述:无
*问题描写叙述:
*程序输出:
*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();
//二目的比較运算符重载
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);//对比+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
//一目运算符的重载
CTime operator++(int);//后置++,下一秒
CTime operator++();//前置++,下一秒,前置与后置返回值不一样
CTime operator--( int);//后置--,前一秒
CTime operator--();//前置--。前一秒
friend ostream&operator<<(ostream&,CTime&);
};
//以下实现全部的运算符重载代码。
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;
}
ostream&operator<<(ostream&output,CTime&t)
{
output<<t.hour<<":"<<t.minute<<":"<<t.second<<endl;
return output;
}
CTime CTime::operator++(int)
{
CTime t=*this;
second++;
if(second>59)
{
second-=60;
minute++;
}
if(minute>59)
{
minute-=60;
hour++;
}
if(hour>=24)
{
hour-=24;
}
return t;
}
CTime CTime::operator++()
{
++second;
if(second>59)
{
second-=60;
minute++;
}
if(minute>59)
{
minute-=60;
hour++;
}
if(hour>=24)
{
hour-=24;
}
return *this;
}
CTime CTime::operator--(int)
{
CTime t=*this;
second--;
if(second<0)
{
second+=60;
minute--;
}
if(minute<0)
{
minute+=60;
hour--;
}
if(hour<0)
{
hour+=24;
}
return t;
}
CTime CTime::operator--()
{
CTime t=*this;
--second;
if(second<0)
{
second+=60;
minute--;
}
if(minute<0)
{
minute+=60;
hour--;
}
if(hour<0)
{
hour+=24;
}
return *this;
}
bool CTime::operator > (CTime &t)
{
if(hour>t.hour)
return true;
else
return false;
if(hour==t.hour&&minute>t.minute)
return true;
else
return false;
if(hour==t.hour&&minute==t.minute&&second>t.second)
return true;
else
return false;
}
bool CTime::operator < (CTime &t)
{
if(hour<t.hour)
return true;
else
return false;
if(hour==t.hour&&minute<t.minute)
return true;
else
return false;
if(hour==t.hour&&minute==t.minute&&second<t.second)
return true;
else
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(*this>t||*this<t)return false;
return true;
}
bool CTime::operator != (CTime &t)
{
if(*this==t)return false;
return true;
}
CTime CTime::operator+(CTime &t)
{
int h,m,s;
h=hour+t.hour;
m=minute+t.minute;
s=second+t.second;
if(s>59)
{
s-=60;
m++;
}
if(m>59)
{
m-=60;
h++;
}
if(h>24)
{
h-=24;
}
CTime t0(h,m,s);
return t0;
}
CTime CTime::operator+(int s)
{
int ss=s%60;
int mm=(s/60)%60;
int hh=s/3600;
CTime t0(hh,mm,ss);
return *this+t0;
}
CTime CTime::operator-(CTime &t)
{
int h,m,s;
h=hour-t.hour;
m=minute-t.minute;
s=second-t.second;
if(s<0)
{
s+=60;
m--;
}
if(m<0)
{
m+=60;
h--;
}
if(h<0)
{
h+=24;
}
CTime t0(h,m,s);
return t0;
}
CTime CTime::operator-(int s)
{
int ss=s%60;
int mm=(s/60)%60;
int hh=s/3600;
CTime t0(hh,mm,ss);
return *this-t0;
}
CTime CTime::operator+=(CTime &c)
{
*this=*this+c;
return *this;
}
CTime CTime::operator+=(int s)
{
*this=*this+s;
return *this;
}
CTime CTime::operator-=(CTime &c)
{
*this=*this-c;
return *this;
}
CTime CTime::operator-=(int s)
{
*this=*this-s;
return *this;
}
//自行编制用于測试的main()函数。有些结果不必依赖display()函数,提倡用单步运行查看结果
int main()
{
CTime t1(8,8,8),t2,t3,t4,t5,t6,t7,t8;
int a,b,c,s1,s2;
char m1,m2;
cout<<"t1:";
cout<<t1<<endl;
cout<<"输入时间 t2:"<<endl;
while(1)
{
cin>>a>>m1>>b>>m2>>c;
if(a>24||a<0||b>60||b<0||c>60||c<0)
cout<<"输入时间不正确!又一次输入:"<<endl;
else if(m1!=':'||m2!=':')
cout<<"时间格式不正确!