/*
*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:赵加响
*完成日期:2014 年 4月 15 日
*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:
*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
};
//下面实现所有的运算符重载代码。
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;
}
void CTime::display()
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
bool CTime::operator > (CTime &t)
{
if(hour>t.hour)
return true;
else
return false;
if(minute>t.minute)
return true;
else
return false;
if(second>t.second)
return true;
else
return false;
}
bool CTime::operator < (CTime &t)
{
if(hour<t.hour)
return true;
else
return false;
if(minute<t.minute)
return true;
else
return false;
if(second<t.second)
return true;
else
return false;
}
bool CTime::operator >= (CTime &t)
{
if(*this<t)return true;
return false;
}
bool CTime::operator <= (CTime &t)
{
if(*this>t)return true;
return false;
}
bool CTime::operator == (CTime &t)
{
if(*this>t||*this<t)return true;
return false;
}
bool CTime::operator != (CTime &t)
{
if(*this==t)return true;
return false;
}
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;
}
//自行编制用于测试的main()函数,有些结果不必依赖display()函数,提倡用单步执行查看结果
int main()
{
CTime t1(8,8,8),t2,t3,t4,t5,t6;
int a,b,c,s1,s2;
char m1,m2;
cout<<"c1:";
t1.display();
cout<<"输入时间 t2:"<<endl;
while(1)
{
cin>>a>>m1>>b>>m2>>c;
if(a>24||a<0||b>24||b<0||c>24||c<0)
cout<<"输入时间不对!重新输入:"<<endl;
else if(m1!=‘:‘||m2!=‘:‘)
cout<<"时间格式不对!重新输入:"<<endl;
else
break;
}
t2.setTime(a,b,c);
cout<<"t2: ";
t2.display();
cout<<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; //“≠”是怎么打出来的??
if (t1>=t2) cout<<"t1≥t2"<<endl;
if (t1<=t2) cout<<"t1≤t2"<<endl;
cout<<endl;
t3=t1+t2;
cout<<"t1+t2: ";
t3.display();
t4=t1-t2;
cout<<"t1+t2: ";
t4.display();
cout<<"输入要t2增加的秒数:"<<endl;
cin>>s1;
t5=t2+s1;
cout<<"t2增加"<<s1<<"秒: ";
t5.display();
cout<<"输入要t1减少的秒数:"<<endl;
cin>>s2;
t6=t2-s2;
cout<<"t1减少"<<s2<<"秒: ";
t6.display();
}
感悟:哎呀!妈呀,好难!尽管程序中大部分都是看的老师的,但我也有增加一些。虽是借鉴,但不容易,且学且珍惜。
八周 项目2 Time类中的运算符重载,布布扣,bubuko.com
原文:http://blog.csdn.net/zjx211314/article/details/23782203