C$++$ pls

Assignment: Write the header file DateManager.h for a class DateManager with the following specifications:

Private Data Members:

year: an int representing the year.

month: an int representing the month.

day: an int representing the day.

Constructors:

A default constructor that initializes the date to January $1,2000.$

A parameterized constructor that accepts three integers and uses them to set the year, month, and day, respectively.

Public Member Functions:

getYear: accepts no argument and returns the value of the year data member.

getMonth: accepts no argument and returns the value of the month data member.

getDay: accepts no argument and returns the value of the day data member.

setYear: accepts an integer to set the year data member and does not return anything.

setMonth: accepts an integer to set the month data member and does not return anything.

setDay: accepts an integer to set the day data member and does not return anything.

isLeapYear: accepts an integer representing a year and returns a boolean value to represent whether the year is a leap year.

displayDate: accepts no argument and prints the date as a string in the format YYYY$-$MM$-$DD$.$

Avoid Multiple inclusions: Use the convention indicated in the book to prevent multiple inclusion errors.