Overloading << and >> in the CTime class

Program code:

#include <iostream>using namespace Std;class ctime//time class {private:unsigned short int hour;  When unsigned short int minute;  Sub unsigned short int second; Seconds public:ctime (int h=0,int m=0,int s=0);//constructor void settime (int h,int m,int s);//Set time//overload >> implement input time friend    istream& operator >> (istream& input, ctime& c);    Overload << achieve output time friend ostream& operator << (ostream& output, ctime& c); overloaded bool operator > (CTime &t), bool operator < (CTime &t), bool operator >= (CTime &t); bool    Operator <= (CTime &t); bool operator = = (CTime &t); bool operator! = (CTime &t); The overloaded CTime operator+ (CTime &c) of the two-mesh operator returns the time, minutes, and seconds specified by C. Example T1 (8,20,25), T2 (11,20,50), T1+t2:41:15ctime operator-(CTime &c);//contrast + understanding CTime operator+ (int s);//return s seconds after CTime operator-(int s);//returns the time before//the overload of the unary operator CTime operator++ (int);//post + +, next second CTime operator++ ();//front + +, next second, The front and back return values are not the same ctime operator--(int);//post--, the previous second CTime Operator--();//Front--。 The previous second///assignment operator overload CTime operator+= (CTime &c); CTime operator-= (CTime &c); CTime operator+= (int s); CTime operator-= (int s);    };//initialization Time Ctime::ctime (int h, int m, int s) {hour = h;    minute = m; Second = s;}    Initialization time void ctime::settime (int h,int m,int s) {hour = h;    minute = m; Second = s;}       Overload >> implement input time istream& operator >> (istream& input, ctime& c) {char ch1, ch2;//save and colon between minutes, minutes, and seconds    do {input>>c.hour>>ch1>>c.minute>>ch2>>c.second;    }while (! (': ' = = ch1 && ': ' = = CH2)); return input;} Overload << implement output time ostream& operator << (ostream& output, ctime& c) {output<<c.hour<< ': '     <<c.minute<< ': ' <<c.second<<endl; return output;}    The overloaded bool Ctime::operator > (CTime &t) {//calculation time is the number of seconds int sec1 = hour * 3600 + minute * + second for the comparison operator (second mesh)    int sec2 = t.hour * 3600 + t.minute * + T.second; if (Sec1 > SEC2) {return true;    } else {return false;    }}bool Ctime::operator < (CTime &t) {//Calculation time is how many seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = t.hour * 3600 + t.minute * + T.second;    if (Sec1 < SEC2) {return true;    } else {return false;    }}bool ctime::operator >= (CTime &t) {//Calculation time is how many seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = t.hour * 3600 + t.minute * + T.second;    if (sec1 >= sec2) {return true;    } else {return false;    }}bool ctime::operator <= (CTime &t) {//Calculation time is how many seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = t.hour * 3600 + t.minute * + T.second;    if (sec1 <= sec2) {return true;    } else {return false;    }}bool Ctime::operator = = (CTime &t) {//calculation time is the number of seconds int sec1 = hour * 3600 + minute * + second; int sec2 = t.hour * 3600 + t.minute * + T.second;   if (sec1 = = sec2) {return true;    } else {return false;    }}bool ctime::operator! = (CTime &t) {//Calculation time is how many seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = t.hour * 3600 + t.minute * + T.second;    if (sec1! = sec2) {return true;    } else {return false; }}//the overload of the two mesh operator CTime ctime::operator+ (CTime &c)//Returns the time, minutes, and seconds specified in C.    Example T1 (8,20,25), T2 (11,20,50), t1+t2:41:15{//time into seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = c.hour * 3600 + c.minute * + C.second;    Two time add int sec3 = SEC1 + sec2;    CTime T1; T1.hour = sec3/3600;//calculation time (time) T1.minute = sec3% 3600/60;//calculation time (min) t1.second = sec3% 3600 60;//calculation time (seconds) ret Urn T1;}    CTime ctime::operator-(CTime &c)//contrast + Understanding {//will time into seconds int sec1 = hour * 3600 + minute * + second;    int sec2 = c.hour * 3600 + c.minute * + C.second;    Subtract two times int sec3 = SEC1-SEC2;    CTime T1; T1.hour = sec3/3600;//calculation time (time)   T1.minute = sec3% 3600/60;//calculation time (min) t1.second = sec3% 3600 60;//calculation time (seconds) return T1;}        CTime ctime::operator+ (int s)//returns the time after s seconds {CTime T;    Time into seconds int sec1 = hour * 3600 + minute * + second;    Calculates the time after adding s seconds int sec2 = SEC1 + S;  T.hour = sec2/3600;//calculation time (time) T.minute = sec2% 3600/60;//calculation time (min) t.second = sec2% 3600 60;//calculation time (seconds) return t;}        CTime ctime::operator-(int s)//return s seconds before time {CTime T;    Time into seconds int sec1 = hour * 3600 + minute * + second;    Computes the time after which the S-second is reduced int sec2 = sec1-s;  T.hour = sec2/3600;//calculation time (time) T.minute = sec2% 3600/60;//calculation time (min) t.second = sec2% 3600 60;//calculation time (seconds) return t;} The overload of the CTime operator is ctime::operator++ (int)//post + +.    such as i++{CTime t = *this;    *this = *this + 1; return t;} CTime ctime::operator++ ()//front + +, such as ++i;    {*this = *this + 1; return *this;}    CTime ctime::operator--(int)//post--, such as i--{CTime t = *this;    *this = *this + 1; return t;} CTime ctime::operator--()//front--, such as I.{*this = *this-1; return *this;}    Add two times (this is a pointer to the time Class) CTime ctime::operator+= (CTime &c) {*this = *this + C; return *this;}    Subtract two times (this is a pointer to the time Class) CTime ctime::operator-= (CTime &c) {*this = *this-c; return *this;}        Add s second CTime ctime::operator+= (int s) {//time into seconds int sec1 = hour * 3600 + minute * + second;    Calculates the time after adding s seconds int sec2 = SEC1 + S;    CTime T1; T1.hour = sec2/3600;//calculation time (time) T1.minute = sec2% 3600/60;//calculation time (min) t1.second = sec2% 3600 60;//calculation time (seconds) ret Urn T1;}        Decrease S-second CTime ctime::operator-= (int s) {//time into seconds int sec1 = hour * 3600 + minute * + second;    Calculates the time after adding s seconds int sec2 = sec1-s;    CTime T1; T1.hour = sec2/3600;//calculation time (time) T1.minute = sec2% 3600/60;//calculation time (min) t1.second = sec2% 3600 60;//calculation time (seconds) ret Urn T1;}    void Main () {//define three time objects CTime T1, T2, T;    cout<< "Please enter the first time:";    cin>>t1;    cout<< "Please enter a second time:";    cin>>t2; Show first time cout<< "T1= ";cout<<t1;    Show second time cout<< "t2 =";cout<<t2; cout<< "\ n" is two times the size: \ 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&LT;=T2) cout<    < "T1≤t2" <<endl;cout<<endl;    Two time add cout<< "T1 + t2 =";    t = t1 + t2;        cout<<t;    Two time subtraction cout<< "t1-t2 =";    t = t1-t2;    cout<<t;    Calculate T1 add 300 seconds after the time cout<< "T1 + 300 seconds =";    t = t1 + 300;    cout<<t;    Calculate T1 to decrease the time after 300 seconds cout<< "t1-300 seconds =";    t = t1-300;    cout<<t;    cout<<endl;    cout<< "T1 =";     cout<<t1;    Calculate t1++ cout<< "t1++ =";    t = t1++;    cout<<t;     cout<<endl;    cout<< "T1 =";     cout<<t1;    Calculate ++t1 cout<< "++t1 =";    t = ++t1;  cout<<t;  cout<<endl;    cout<< "T1 =";     cout<<t1;    Calculate t1--cout<< "t1--=";    t = t1--;    cout<<t;     cout<<endl;    cout<< "T1 =";     cout<<t1;    Calculate--t1 cout<< "--t1 =";    t =--t1;    cout<<t;    cout<<endl;    cout<< "t2 =";    cout<<t2;    cout<< "T =";    cout<<t;    T2 + = t;    cout<< "Run t2 + = T1 after t2 =";    cout<<t2;    cout<<endl;    cout<< "t2 =";    cout<<t2;    cout<< "T =";    cout<<t;     T2-= t;    cout<< "Run t2-= T1 after t2 =";    cout<<t2;    cout<<endl; System ("Pause");}

Operation Result:

Overloading << and >> in the CTime class