creating a class called date and a child class called time

[xillah]

Hello everyone, I am trying to learn c++ and I am having a very hard time understanding this problem.

I am supposed to create a class called date that has the following requirements:

3 constructors
1 destructor
getMonth
getDay
getYear
setMonth
setDay
setYear
A function print with no arguments
An equality overload
An assignment overload
A copy constructor

For the child time it must have

3 constructors
1 destructor
getHours
getMinutes
getSeconds
setHours
setMinutes
setSeconds
A function print with no arguments
An equality overload
An assignment overload
A copy constructor

I know how to do do the simple code like getHours or getDate or setHours etc. However, I am not exactly sure where to go for the 3 constructors, equality overload, assignment overload and the copy constructor. If anyone can point me in the right direction I would appreciate it. Thanks

[candyfreak]

I'm not sure why your would need three constructors.

Edit: Zhuge is right i forgot about the copy constructor


But for the equality operator it would look something like...

class date
{
public:
	bool operator==(date& otherDate);
	int getDay();
private:
	int day;
};


int date::getDay()
{
	return day;
}

bool date::operator==(date& otherDate)
{
	if(date.getDay() == otherDate.getDay()) //check to see whether the days are equal
//I believe you can also do      if(this->date == otherDate.getDay())
	{
               return true;
	}
        else
        return false;
}

You would just have to check all the elements of your class to see if their equal in a similar manner as above.

[Zhuge]

I imagine the three constructors would be a default constructor, a copy constructor, and a constructor to initialize with given values.

[xillah]

Thank you very much. I will start working on it.

[candyfreak]

So you know the assignment operator is similar to that of the equality.
Since I'm going to bed I figured i'd post this before I go.

//Overloading the assignment operator
date& date::operator=(date& rightObject) // this sets it up so you can return an object of type date
{
      if(this != &rightObject) // this just avoids self-assignment
      {
             day = rightObject.getDay(); //just continue with all your variables basically
      } 
      return *this; //returns your object
}

//Copy Constructor is similiar except you want

date::date(date& otherDate) //constructors dont return anything but this
//will allow you to copy contents of the object otherDate into your new object
{
      day = otherDate.getDay();
}

//default constructor

date::date()
{

}

//3rd constructor with paramters

date::date(int dayOfWeek...etc)
{
      day=dayOfWeek;
}

[lael laweramce]

By any chance, could you post the finished copy of the program? I'm curious to see what is looks like.

[therockon7throw]

To solve such problem you need some basic understanding of OPP in C++

Search for terms like constructor, destructor, overloading operator and inheritance in C++. Once you have the theory you can do the rest.