task 0.0

//times1.cpp
//converts from time24 to time12 using operator in time24
#include <iostream>
#include <string>
using namespace std;
////////////////////////////////////////////////////////////////
class time12
{
private:
    bool pm; //true = pm, false = am
    int hrs; //1 to 12
    int mins; //0 to 59
public: //no-arg constructor
    time12() : pm(true), hrs(0), mins(0)
    { }
//3-arg constructor
    time12(bool ap, int h, int m) : pm(ap), hrs(h), mins(m)
    { }
    void display() const //format: 11:59 p.m.
    {
        cout << hrs << ":";
             if(mins < 10)
                 cout << "0"; //extra zero for “01”
        cout << mins << " " ;
        string am_pm = pm ? "p.m." : "a.m.";
        cout << am_pm;
    }
};
////////////////////////////////////////////////////////////////
class time24
{
private:
    int hours; //0 to 23
    int minutes; //0 to 59
    int seconds; //0 to 59
public: //no-arg constructor
    time24() : hours(0), minutes(0), seconds(0)
    { }
    time24(int h, int m, int s) : //3-arg constructor
        hours(h), minutes(m), seconds(s)
    { }
    void display() const //format: 23:15:01
    {
        if(hours < 10) cout << "0";
cout << hours << ": ";
        if(minutes < 10) cout << "0";
cout << minutes << ":";
        if(seconds < 10) cout << "0";
        cout << seconds;
    }
    operator time12() const; //conversion operator
};
//--------------------------------------------------------------
time24::operator time12() const //conversion operator
{
    int hrs24 = hours;
    bool pm = hours < 12 ? false : true; //find am/pm
//round secs
    int roundMins = seconds < 30 ? minutes : minutes+1;
    if(roundMins == 60) //carry mins?
    {
        roundMins=0;
        ++hrs24;
        if(hrs24 == 12 || hrs24 == 24) //carry hrs?
            pm = (pm==true) ? false : true; //toggle am/pm
    }
    int hrs12 = (hrs24 < 13) ? hrs24 : hrs24-12;
    if(hrs12==0) //00 is 12 a.m.
    {
        hrs12=12;
        pm=false;
    }
    return time12(pm, hrs12, roundMins);
}
////////////////////////////////////////////////////////////////
int main()
{
    int h, m, s;
    while(true)
    {
        //get 24-hr time from user
cout << "Enter 24-hour time:\n";
        cout << " Hours (0 to 23): ";
        cin >> h;
        if(h > 23) //quit if hours > 23
            return(1);
cout << " Minutes:";
        cin >> m;
cout << " Seconds:";
        cin >> s;
        time24 t24(h, m, s); //make a time24
cout << "You entered:"; //display the time24
        t24.display();
        time12 t12 = t24; //convert time24 to time12
cout << "\n12-hour time:"; //display equivalent time12
        t12.display();
        cout << "\n\n";
    }
    return 0;
}