第八周上机项目2.1Time类中的运算符重载

来源：互联网发布：宁家骏指出要用大数据编辑：程序博客网时间：2024/06/01 12:16
/* *Copyright (c) 2015, 烟台大学计算机学院 *All rights reserved. *文件名称：text.cpp *作者：陈栋梁 *完成日期：2015年 4 月 29日 *版本号：v1.0 * */#include <iostream>using namespace std;class CTime{private:    unsigned short int hour;    unsigned short int minute;    unsigned short int second;public:    CTime(int h=0,int m=0,int s=0);    void setTime(int h,int m,int s);    void display();    bool operator > (CTime &t);    bool operator < (CTime &t);    bool operator >= (CTime &t);    bool operator <= (CTime &t);    bool operator == (CTime &t);    bool operator != (CTime &t);    CTime operator+(CTime &t);    CTime operator-(CTime &t);    CTime operator+(int s);    CTime operator-(int s);    CTime operator+=(CTime &c);    CTime operator-=(CTime &c);    CTime operator+=(int s);    CTime operator-=(int s);};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;    if (hour<t.hour) return false;    if (minute>t.minute) return true;    if (minute<t.minute) return false;    if (second>t.second) return true;    return false;}bool CTime::operator < (CTime &t){    if (hour<t.hour) return true;    if (hour>t.hour) return false;    if (minute<t.minute) return true;    if (minute>t.minute) return false;    if (second<t.second) return true;    return false;}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;}bool CTime::operator >= (CTime &t){    if (*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;    s=second+t.second;    m=minute+t.minute;    h=hour+t.hour;    if (s>59)    {        s-=60;        m++;    }    if (m>59)    {        m-=60;        h++;    }    if (h>23) 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;    s=second-t.second;    m=minute-t.minute;    h=hour-t.hour;    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-=(CTime &c){    *this=*this-c;    return *this;}CTime CTime::operator+=(int s){    *this=*this+s;    return *this;}CTime CTime::operator-=(int s){    *this=*this-s;    return *this;}int main(){    CTime t1(9,26,25),t2(17,20,50),t;    cout<<"t1为：";    t1.display();    cout<<"t2为：";    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;    return 0;}
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