2015.5.13time类中的运算符重载（续）

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#include<iostream>using namespace std;class CTime{private:    short int hour;    short int minute;    short int second;public:    CTime(int h=0,int m=0,int s=0);    void setTime(int h,int m,int s);    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 &t);    CTime operator-=(CTime &t);    CTime operator+=(int s);    CTime operator-=(int s);    CTime operator++();    CTime operator--();    CTime operator++(int);    CTime operator--(int);    friend ostream& operator<<(ostream&,CTime &c);    friend istream& operator>>(istream&,CTime &c);    void adjust_sec();    void adjust_min(int t);    void adjust_hou(int t);};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;}bool CTime::operator>(CTime &t){    if(hour>t.hour||(hour=t.hour&&minute>t.minute)||((hour=t.hour,minute=t.minute)&&second>t.second))        return true;    else        return false;}bool CTime::operator<(CTime &t){    if(hour<t.hour||(hour=t.hour&&minute<t.minute)||((hour=t.hour,minute=t.minute)&&second<t.second))        return true;    else        return false;}bool CTime::operator>=(CTime &t){    if(*this<t)        return false;    else        return true;}bool CTime::operator<=(CTime &t){    if(*this>t)        return false;    else        return true;}bool CTime::operator==(CTime &t){    if(*this>t||*this<t)        return false;    else        return true;}bool CTime::operator!=(CTime &t){    if(*this>t||*this<t)        return true;    else        return false;}CTime CTime::operator+(CTime &t){    CTime time;    time.hour=hour+t.hour;    time.minute=minute+t.minute;    time.second=second+t.second;    time.adjust_sec();    return time;}CTime CTime::operator-(CTime &t){    CTime time;    time.hour=hour-t.hour;    time.minute=minute-t.minute;    time.second=second-t.second;    time.adjust_sec();    return time;}CTime CTime::operator+(int s){    CTime time;    time.hour=hour;    time.minute=minute;    time.second=second+s;    time.adjust_sec();    return time;}CTime CTime::operator-(int s){    CTime time;    time.hour=hour;    time.minute=minute;    time.second=second-s;    time.adjust_sec();    return time;}CTime CTime::operator+=(CTime &t){    second+=t.second;    minute+=t.minute;    hour+=t.hour;    CTime::adjust_sec();    return *this;}CTime CTime::operator-=(CTime &t){    second+=t.second;    minute+=t.minute;    hour+=t.hour;    CTime::adjust_sec();    return *this;}CTime CTime::operator+=(int s){    second+=s;    CTime::adjust_sec();    return *this;}CTime CTime::operator-=(int s){    second-=s;    CTime::adjust_sec();    return *this;}CTime CTime::operator++(){    second++;    CTime::adjust_sec();    return *this;}CTime CTime::operator--(){    second--;    CTime::adjust_sec();    return *this;}CTime CTime::operator++(int){    CTime c;    c=*this;    second++;    CTime::adjust_sec();    return c;}CTime CTime::operator--(int){    CTime c;    c=*this;    second--;    CTime::adjust_sec();    return c;}void CTime::adjust_sec(){    int m;    if(second>=0)    {        m=second/60;        second%=60;        CTime::adjust_min(m);    }    else    {        m=second/60;        m=m-1;        second%=60;        second+=60;        CTime::adjust_min(m);    }}void CTime::adjust_min(int t){    int h;    minute+=t;    if(minute>=0)    {        h=minute/60;        minute%=60;        CTime::adjust_hou(h);    }    else    {        h=minute/60;        h=h-1;        minute%=60;        minute+=60;        CTime::adjust_hou(h);    }}void CTime::adjust_hou(int t){    hour+=t;    if(hour>=0)    {        hour%=24;    }    else    {        hour%=24;        hour+=24;    }}ostream& operator<<(ostream&,CTime&c){    cout<<c.hour<<':'<<c.minute<<':'<<c.second<<endl;    return cout;}istream& operator>>(istream&,CTime&c){    cout<<"输入小时，分钟和秒";    cin>>c.hour>>c.minute>>c.second;    return cin;}int main(){    CTime t1,t2,t3;    cout<<"输入t1,t2"<<endl;    cin>>t1>>t2;    cout<<"t1,t2分别为"<<endl;    cout<<t1<<t2;    cout<<"t1+t2=";    t3=t1+t2;    cout<<t3;    t3=t1++;    cout<<t3;    t3=++t1;    cout<<t3;    cout<<(++t1);    return 0;}
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