/* *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