time_date.cpp

/*****************************************************************//**
 * \file   time_date.cpp
 * \brief  complete version of the lab
 * 
 * $ cl /EHsc /analyze /std:c++20 .\lab_Time_Date.cpp
 * $ .\lab_Time_Date.exe
 * 
 * \author Xuhua
 * \date   November 2020
 *********************************************************************/

#include <iostream>

class Time {
private:
    int hour;
    int minute;
    int second;

public:
    // set functions
    void setHour(int userHour); // definiton of set functions follow with validation
    void setMinute(int userMinute);
    void setSecond(int userSecond);

    // get functions
    int getHour() { return hour; }
    int getMinute() { return minute; }
    int getSecond() { return second; }

    // other functions within the class
    void setTime(int userHour, int userMinute, int userSecond);
    // void printTime(); this line is commented out because void Date::printDate(Time time) {}

    // overloaded functions with the same name and different arguments
    void setTime(int userHour, int userMinnute);
    void setTime(int userHour);

    friend class Date; //  class "Time" is made friend to class "Date"
};


class Date {
private:
    int year;
    int month;
    int day;

public:
    // set functions:
    void setMonth(int userMonth);
    void setDay(int userDay);
    void setYear(int userYear);

    // get functions:
    int getMonth() { return month; }
    int getDay() { return day; }
    int getYear() { return year; }

    // other functions
    void setDate(int userYear, int userMonth, int userDay);
    void printDate(Time time);

    // friend class Time;
};

int main(void) {
    Time time; // create a Time object
    Date date; // create a data object

    // initialize diffeerent properties for object "time" and "date"
    time.setTime(14, 30, 30);
    date.setDate(2020, 11, 23);

    date.printDate(time);

    return 0;
}

// class "Time" functions:
void Time::setHour(int userHour) // hour should be valid form 0 to 23
{
    if ((userHour >= 0) && (userHour <= 23)) {
        hour = userHour;
    } else if (userHour == 24) {
        std::cout << "\n[fn]Do you mean 0 a.m.? It is automatically set to 0 a.m." << "\n";
        hour = 0;
    } else {
        std::cout << "\n[fn]Invalid hour value " << userHour << "\n";
        hour = 0;
    }

    return;
}

void Time::setMinute(int userMinute) // minute should be valid from 0 to 59
{
    if ((userMinute >= 0) && (userMinute <= 59)) {
        minute = userMinute;
    } else {
        std::cout << "\n[fn]Invalid minute value " << userMinute << "\n";
        minute = 0;
    }

    return;
}

void Time::setSecond(int userSecond) // second should be valid form 0 to 59
{
    if ((userSecond >= 0) && (userSecond <= 59)) {
        second = userSecond;
    } else {
        std::cout << "\n[fn]Invalid second value " << userSecond << "\n";
        second = 0;
    }

    return;
}

// original set time functions with three variables
void Time::setTime(int userHour, int userMinute, int userSecond) {
    setHour(userHour);
    setMinute(userMinute);
    setSecond(userSecond);

    return;
}

/*
 * void Time::printTime() // not required
 * {
 *	std::cout << "\n[fn]It's " << getHour() << " : " << getMinute() << " : " << getSecond() << "\n";
 *	// using get functions to get value with verification
 *
 *	return;
 * }
 */

void Time::setTime(int userHour, int userMinute) // overloaded function #1
{
    setHour(userHour);
    setMinute(userMinute);

    setSecond(0); // to keep the variable from garbage variable

    return;
}


void Time::setTime(int userHour) // overloaded function #2
{
    setHour(userHour);

    setMinute(0); // set default value 0 for testing
    setSecond(0);

    return;
}

// class "Date" class functions:
void Date::setYear(int userYear) {
    if (userYear >= 1900)
        year = userYear;
    else {
        std::cout << "\n[fn]Invalid value. Setting year to 1900" << "\n";
        year = 1900;
    }
    return;
}

void Date::setMonth(int userMonth) {
    if ((userMonth > 0) && (userMonth <= 12))
        month = userMonth;
    else {
        std::cout << "\n[fn]Invalid month value. Setting month to 1." << "\n";
        month = 1;
    }

    return;
}

void Date::setDay(int userDay) {
    if ((userDay > 0) && (userDay <= 31))
        day = userDay;
    else {
        std::cout << "\n[fn]Invalid day value. Setting day to 1." << "\n";
        day = 1;
    }

    return;
}

void Date::setDate(int userYear, int userMonth, int userDay) {
    setYear(userYear);
    setMonth(userMonth);
    setDay(userDay);

    return;
}

void Date::printDate(Time time) {
    std::cout << "\n[fn]\"void Date::printDate(Time time)\" called" << "\n"
              << "[fn]Date: " << this->getMonth() << "/" << this->getDay() << "/" << this->getYear() << "\n"
              << "[fn]Time: " << time.getHour() << ":" << time.getMinute() << ":" << time.getSecond() << "\n";

    return;
}