Chapter 13.6, Problem 13.7CP

Public member function:

Public member functions are used to retrieve the data of private member variables of a class.

• Public member functions can be accessed from both inside as well as outside of the class.
• The declaration of public member functions is given inside a class. But the definition can be given either inside or outside the class.
• When the definition is given outside of the class, then scope resolution operator (::) is used.

Example program:

The below program demonstrates accessing of a class’s private variables from outside of the class.

//Include required header files

#include <iostream>

#include <string>

using namespace std;

//Class declaration

class Date

{

//Access specifier

private:

    //Declare variables

    int month;

    int day;

    int year;

//Access specifier   

public:

    //Mutator function to set month

    void set_Month(int m)

    {

        //Set the month

        month = m;

    }

    //Mutator function to set day

    void set_Day(int d)

    {

        //Set the day

        day = d;

    }

    //Mutator function to set year

    void set_Year(int y)

    {

        //Set the year

        year = y;

    }

    //Accessor function that returns month

    int get_Month() const

    {

        //Return month

        return month;

    }

    //Accessor function that returns day

    int get_Day() const

    {

        //Return day

        return day;

 ;&#x...