Class composition help getting error.

[Arres]

Date.h actually validate and display the date.

//Date.h
#ifndef DATE_H
#define DATE_H

class Date
{
public:
	static const int monthOfYear=12;
	Date(int=1, int=1, int=1900);
	void print () const;
	~Date();
private:
	int day;
	int month;
	int year;
	int checkDay (int ) const;
};
#endif 

Class Date member function defined below

//Date.cpp
#include <iostream>
#include <stdexcept>
#include "Date.h"
using namespace std;

Date::Date(int dy, int mn, int yr)
{
	if(mn>0 && mn <=monthOfYear)
		month = mn;
	else 
		throw invalid_argument (" month must be 1-12 " );
	year= yr;

	day = checkDay(dy);
	cout << "constructor for the class Date giving value of";
	print();
	cout << endl;
}

void Date::print () const
{
	cout << day << '/' << month << '/' << year;
}
Date::~Date ()
{
	cout << "destructor for the class Date ";
	print ();
	cout << endl;
}

int Date::checkDay (int testDay) const
{
	static const int daysOfMonths [monthOfYear + 1] = {0,31,28,31,30,31,30,31,30,31,30,31,30};

	if ( testDay>0 && testDay <= daysOfMonths[month] )
		return testDay;
	if ( month == 2 && testDay == 29 && (year % 4 )==0 )
		return testDay;
	throw invalid_argument ("given day is invakid" );
}

The below is another class Employee in which the above class is a host. The class shows the first and last name and takes date from above class.

//Employee.h
#ifndef EMPLOYEE_H
#define EMPLOYEE_H

#include <string>
#include "Date.h"
using namespace std;

class Employee
{
public:
	Employee ( const string &, const string &, const Date &, const Date &);
	void print () const;
	~Employee ();
private:
	string fname;
	string lname;
	const Date birthdate;
	const Date hiredate;
};
#endif 

Class Employee Definition is below

//Empolyee.cpp
#include <iostream>
#include "Date.h"
#include "Employee.h"

using namespace std;

Employee::Employee(const string &firstname, const string &lastname, const Date &DateOfBirth, const Date DateOfHire )
	: fname (firstname),
	lname (lastname),
	birthdate (DateOfBirth),
	hiredate (DateOfHire)
{
	cout << "constructor of class employee " << fname << " " << lname << endl;
}
void Employee::print () const 
{
	cout << lname << " " << fname << " Birthday ";
	birthdate.print();
	cout << " Hired ";
	hiredate.print ();
	cout << endl;
}

Employee::~Employee ()
{
	cout << " Distructor of employee class object "<< lname << " " << fname << endl;
}

and finally the main function is below

//three.cpp
#include <iostream>
#include <conio.h>
#include "Date.h"
#include "Employee.h"
using namespace std;

int main()
{
	Date birth (11,12,1910);
	Date hire (14,3,1950);

	Employee man ("arslan","afzal", birth, hire );

	cout << endl;
	man.print ();

	getch();
	return 0;
}

I'm getting error at Employee.cpp at line 8
Error: no instance of overloaded function Employee::Employee matches the specified type.
Any help will be appreciated.

[MrHutch]

The last date parameter in your cpp file is passed by value whereas the prototype in the header file is passed by reference.

[Arres]

iHutch105 thank you very much, I appreciate it that you looked my code to find the problem, Otherwise i was thinking who will check so long codes.
Thanks a lot again, you are great. God bless you.