2014-第九周项目二

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/**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:刘晓晓*完成日期：2014年 04月14号*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:时间类中的运算符重载*程序输出：无*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    CTime operator++(int);    CTime operator++();    CTime operator--(int);    CTime operator--();    friend ostream&operator<<(ostream&,CTime&);    friend istream&operator>>(istream&,CTime&);};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)        return false;    return true;}bool CTime::operator <= (CTime &t){    if(*this>t)        return false;    return true;}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;    return false ;}CTime CTime::operator+(CTime &t){    int h,m,s;    s=second+t.second;    if (s>59)    {        s-=60;        m++;    }m=minute+t.minute;    if (m>59)    {        m-=60;        h++;    }     h=hour+t.hour;    if (h>23) h-=24;    CTime t3(h,m,s);    return t3;}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 t3(h,m,s);    return t3;}CTime CTime::operator+(int s){    int s1=s%60;    int m1=(s/60)%60;    int h1=s/3600;    CTime t3(h1,m1,s1);    return *this+t3;}CTime CTime::operator-(int s){    int  s1,m1,h1;    s1=s%60;    m1=(s/60)%60;    h1=s/3600;    CTime t3(h1,m1,s1);    return *this-t3;}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)//返回s秒后的时间{    *this=*this+s;    return *this;}CTime CTime::operator-=(int s)//返回s秒前的时间{    *this=*this-s;    return *this;}CTime CTime ::operator++(int){    CTime temp(*this );    second++;    if (second>=60)    {        second-=60;        ++minute;    }    return temp;}CTime CTime::operator++(){if (++second>=60){    second-=60;    ++minute;}return *this;}CTime CTime::operator--(){   if (--second<0)   {       second+=60;       --minute;       if (minute<60)       {           minute+=60;           --hour;       }   }   return *this ;}CTime CTime::operator--(int){    CTime temp(*this);    if (--second<0)   {       second+=60;       --minute;       if (minute<60)       {           minute+=60;           --hour;       }   }   return temp;}ostream&operator<<(ostream&output,CTime&t){   cout<<t.hour<<":"<<t.minute<<":"<<t.second<<endl;    return output;}istream&operator>>(istream&input,CTime&t){    int h,m,s;    char sign;    do{    input>>h>>sign>>m>>sign>>s;    }    while (h>24||m>60||s>60||sign!=':');    t.hour=h;    t.minute=m;    t.second=s;    return input;}int main(){    CTime c1(11,20,25),c2(8,20,45),c3;    cout<<"c1：";    c1.display();    cout<<"c2：";    c2.display();    cout<<"比较两个时间大小"<<endl;    if (c1>c2) cout<<"c1>c2"<<endl;    if (c1<c2) cout<<"c1<c2"<<endl;    if (c1==c2) cout<<"c1＝c2"<<endl;    if (c1!=c2) cout<<"c1!=c2"<<endl;    if (c1>=c2) cout<<"c1>=c2"<<endl;    if (c1<=c2) cout<<"c1<=2"<<endl;    cout<<endl;    c3=c1+c2;    cout<<"两时间相加;"<<endl;    c3.display();    c3=c1-c2;    cout<<"两时间相减;"<<endl;    c3.display();    cout<<"+100秒后的时间;"<<endl;    c3=c1+100;    c3.display();    cout<<"-400秒后的时间;"<<endl;    c3=c1-400;    c3.display();    cout<<"加个时间给自己"<<endl;    c1+=c2;    c1.display();    cout<<"减个时间给自己："<<endl;    c1-=c2;    c1.display();    cout<<"加600秒给自己："<<endl;    c1+=600;    c1.display();    cout<<"减200秒给自己："<<endl;    c1-=200;    c1.display();    ++c1;    cout<<"++c1:";    c1.display();    c3=c1++;    cout<<"c1++:";    c1.display();    --c1;    cout<<"--c1:";    c1.display();c3=c1--;cout<<"c1--";c1.display();    return 0;}
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