inheritance in c++ ( C::B ) - c++

Question

i am new to c++ and not skillful in English!
i have searched web and read same posts on this site but did not worked for me!
its a wonder that inheritance used in this part of my project seems correct to me but get these error from C::B 13.12 with GNU GCC Compiler under Windows 8.1 :
||=== Build: Debug in test (compiler: GNU GCC Compiler) ===|
D:\AirportProject\Airport\aircrew.h|8|error: expected class-name before '{' token|
D:\AirportProject\Airport\aircrew.cpp||In constructor 'Aircrew::Aircrew(const string&, const string&, long long int, const Date&, long long int, const Date&)':|
D:\AirportProject\Airport\aircrew.cpp|5|error: class 'Aircrew' does not have any field named 'Person'|
||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
this is my code:
person.h:
#include "date.h"
using namespace std;
class Person{
public:
Person( const string&, const string&, long long, const Date& );
void set( const string&, const string&, long long, const Date& );
private:
char name [31];
char last_name [31];
long long national_code ; //long long for storing a 10 digit number
Date birthday;
};
person.cpp:
#include "person.h"
#include <string>
using namespace std;
Person::Person( const string& n, const string&ln, long long ncode, const Date& D )
{ set( n, ln, ncode, D ); }
//set data members of aircrew
void Person::set( const string& n, const string&ln, long long ncode, const Date& D )
{
birthday = D ;
strncpy( name, n.c_str(), 30 ); //converting string to char array
strncpy( last_name, ln.c_str(), 30 );
national_code= ncode;
}
aircrew.h:
#include <string>
#include "person.h"
#include "date.h"
using namespace std;
class Aircrew: public Person
{
public:
//copy-constructor
Aircrew( const string&, const string&, long long, const Date&,
long long, const Date& );
//Set member data
void set( long long, const Date& );
private:
//long long used to be sure about 10digit numbers and more
long long personal_code;
// date of employment
Date employ_date;
};
aircrew.cpp:
#include "aircrew.h"
using namespace std;
Aircrew::Aircrew( const string& n, const string& ln, long long ncode,
const Date& D_b, long long pcode,const Date& D_e )
:Person( n, ln, ncode, D_b ) //base class constructor
{set( pcode, D_e );}
void Aircrew::set(long long pcode, const Date& D_e )
{
personal_code = pcode;
employ_date = D_e; //assignment operator( = ) is overloaded for Date class
}
date.h
class Date
{
public:
Date ( int=1, int=1, int=1900 ); //Default constructor
void set( int, int, int );
int getForSearch() const ;
void print() const ;
//assignment operator( = ) is overloaded for Date class
Date& operator=( const Date& D )//assignment operator(=) can NOT be defined as friend
{
day = D.day;
month = D.month;
year = D.year;
return *this;
}
private:
int day, month, year;
};
date.cpp
#include <iostream>
#include "date.h"
using namespace std;
//Default constructor
Date::Date( int d, int m, int y) { set( d, m, y ); }
//set() function sets the entered date if its valid
void Date::set( int d, int m, int y )
{
day=( d>0? d: 1);
month=( m>0? m: 1);
year= ( y>0? y: 1900);
}
//getForSearch () returns an integer like yyyymmdd for easy search
int Date::getForSearch () const
{
return ((year*100 + month)*100 + day);
}
//print Date in the form of mm/dd/yyyy
void Date::print () const
{
cout << " " << month << "/" << day << "/" << year;
}
and also an empty main.cpp!
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
cout << right <<setw( 30 ) << "\nAIRPORT MANAGER" << endl;
return 0;
}
Any help will be appreciate :)