Question

C++

* Program 2:

     Create a date class and Person Class.   Compose the date class in the person class.

   First, Create a date class.

   Which has integer month, day and year

   Each with getters and setters. Be sure that you validate the getter function inputs:
    2 digit months - validate 1-12 for month
    2 digit day - 1-3? max for day - be sure the min-max number of days is validate for specific month
        Use 4 digits for the year... - validate greater or equal to 0001

   Have a default constructor which set values to 01 01 1900

   Have a parameterized constructor which lets you set date

* Next, Create a person class

   Which has string firstname, lastname ( private members )

   Date of birth (using new date class YOU declared - place declaration as private member in person )

   Write getter and setters for firstname and last name ( public members )

   Write getter and setters for month, day and year for private data declaration ( public members )

   Write a person default constructor function that defaults "None" "None" for firstname and lastname ( public members )

   Write a person parmaterized constructor function that can pass data to firstname and lastname, and
      the composed birthdate. ( public members )

* Code and test a person class

   Declare a person Person1 using the default constructor, to test it.

      Using getters and setters of the person class to test fully.

   Declare a person Person2 using the parmaterized constructor, to test it.

      Using getters and setters of the person class to test fully.

Answer 1

#include <iostream>

using namespace std;

// Online C++ compiler to run C++ program online
#include <iostream>

class Date
{
  public:                         //access control
    int day;                      //these data members
    int month;                    //can be accessed
    int year;                     //from anywhere
 
  Date()                                //   setter
  {                                     // Constructor without parameters
    day = 01;
    month = 01;
    year = 1900;
  } 
  
  Date(int x, int y, int z)              //  setter
  {                                      // Constructor with parameters
    if(x>=01 && x<=31 && y>=1 && y<=12 && z>=0001)
    {
        day = x;
        month = y;
        year = z;
    }
    else
    {
        cout << "Invalid Input";
    }    
  }
  
  public:
  int dayGetter()
  {
      return day;
  }
  
  public:
  int monthGetter()
  {
      return month;
  }
  
  public:
  int yearGetter()
  {
      return year;
  }
};

class Person
{
    private:                        //access control
        string firstName;           //these data members
        string lastName;            //can be accessed
        Date dateOfBirth;           //from anywhere
    
    public:
    
    Person(string x, string y, Date d)             //   setter
    
    { // Constructor with parameters
        firstName = x;
        lastName = y;
        Date dateOfBirth = d;
    }
    
    public:
    
    Person() 
    {                              // Constructor without parameters   (setter)
        firstName = "None";
        lastName = "None";
    }
    
    public:
    string firstNameGetter()
    {
      return firstName;
    }
    
    public:
    string lastNameGetter()
    {
    return lastName;
    }

};

int main() {
    
    cout << "Hello world!\n\n";
    Date d1(17, 03, 2020);
    cout << d1.yearGetter() << "\n";
    Person p1;
    cout << p1.lastNameGetter() << "\n";
}