Given the date class interface below:

class date

{

public:

void setDate(int mm, int dd, int yyyy);

// Postcondition: data object has been set to the values passed to the function

int getMonth();

// "accessor function" or simply "accessor"

// Postcondition: month of the calling object is returned

int getDay();

// Postcondition: day of the calling object is returned

int getYear();

// Postcondition: year of the calling object is returned

int difference(date &d2);

// Postcondition: number of days between the calling date object and date object d2 passed to the function

int compareDates(date &d2);

// Comparing the calling date object and the date object d2 passed to the function

// Postcondition: returns 1, 0, and -1 if the calling object is earlier than, later than, or the same as the object d2, respectively

void inputDate();

// Prompts the user to enter three integer values for month, day, and year

// Postcondition: the calling object is filled with valus entered by the user

void displayDate();

// Postcondition: the contents of the calling object is displayed in mm/dd/yyyy format

private:

bool isLeapYear();

// A "helper" or "auxiliary" function called by public member function(s); not accessible from outside of the class

// Postcondition: returns true if the "year" of the calling object is a leap year; returns false otherwise

int month;

int day;

int year;

};

You are asked to

1. implement all nine member functions of the above date class.
2. Write a main() function to test all nine member functions directly or indirectly. Design your program output to make it clearly and easily readable to anyone who reads it. The output of a sample run tests most by not all member functions but you should test them all. Note that the isLeapYear() is indirectly called by the difference() function.

Note: If you have trouble with the coding of difference() member function, you may ignore the isLeapYear() member function and make a simple assumption that all twelve months contains 30 days.