Structural Patterns - Bridge

Bridge

//Structural Patterns - Bridge

#include <iostream>
#include <iomanip>
#include <string.h>
using namespace std;

class TimeImp {
public:
    TimeImp(int hr, int min) {
        hr_ = hr;
        min_ = min;
    }
    virtual void tell() {
        std::cout << "time is " << setw(2) <<setfill('*') //48
            << hr_ << min_ << endl;
    }
protected:
    int hr_, min_;
};

class CivilianTimeImp: public TimeImp {
public:
    CivilianTimeImp(int hr, int min, int pm): TimeImp(hr, min) {
        if (pm)
            strcpy(whichM_, " PM");
        else
            strcpy(whichM_, " AM");
    }

    /* virtual */
    void tell() {
        cout << "time is " << hr_ << ":" << min_ << whichM_ << endl;
    }
protected:
    char whichM_[4];
};

class ZuluTimeImp: public TimeImp {
public:
    ZuluTimeImp(int hr, int min, int zone): TimeImp(hr, min) {
        if (zone == 5)
            strcpy(zone_, " Eastern Standard Time");
        else if (zone == 6)
            strcpy(zone_, " Central Standard Time");
    }

    /* virtual */
    void tell() {
        std::cout << "time is "<< setw(4)<<setfill('0');//48
        std::cout<< hr_ << min_ << zone_ <<std::endl;
    }
protected:
    char zone_[30];
};

class Time {
public:
    Time(){}
    Time(int hr, int min) {
        imp_ = new TimeImp(hr, min);
    }
    virtual void tell() {
        imp_->tell();
    }
protected:
    TimeImp *imp_;
};

class CivilianTime: public Time {
public:
    CivilianTime(int hr, int min, int pm) {
        imp_ = new CivilianTimeImp(hr, min, pm);
    }
};

class ZuluTime: public Time {
public:
    ZuluTime(int hr, int min, int zone) {
        imp_ = new ZuluTimeImp(hr, min, zone);
    }
};

int main() {
    Time *times[3];
    times[0] = new Time(14, 30);
    times[1] = new CivilianTime(2, 30, 1);
    times[2] = new ZuluTime(14, 30, 6);
    for (int i = 0; i < 3; i++)
        times[i]->tell();

    int a=1;
    cout<<a<<setw(2)<<a<<setw(3)<<a<<endl;
}