Classes, Composition, Constructors

Hi! I have such a problem. I have created classes IT-company, HR-manager and Technical manager. They are linked with composition. Code:

class Technical_manager;
class Hr_manager;

class It_company
{
public:
	It_company();
	void get(void);
	void set(void);

	std::vector<Technical_manager> technical_manager;
	std::vector<Hr_manager> hr_manager;
protected:
private:
	std::vector<std::string> vacancyList;
	std::string name;
};

class Hr_manager
{
public:
	Hr_manager();
	void prepareVacancyList(void);
	void chooseCandidates(void);
	void get(void);
	void set(void);
protected:
private:
	std::string name;
};

class Technical_manager
{
public:
	Technical_manager();
	void prepareTest(void);
	void checkTest(void);
	void holdingInterview(void);
	void get(void);
	void set(void);
protected:
private:
	std::string name;
	int requirementLevel;
	int commutabilityLevel;
};

Also I have created constructors just like that:

It_company::It_company() :
Hr_manager(),
Technical_manager(),
name("NAME"),
vacancyList()
{
	std::cout << "In constructor IT" << std::endl;
}

Hr_manager::Hr_manager():
name("Name")
{
	std::cout << "In constructor HR" << std::endl;
}

Technical_manager::Technical_manager():
name("name")
{
	std::cout << "In constructor Tm" << std::endl;
}

But Visual Studio 2013 return errors:
error C2614: ‘It_company’ : illegal member initialization: ‘Technical_manager’ is not a base or member
error C2614: ‘It_company’ : illegal member initialization: ‘Hr_manager’ is not a base or member

What should I do to solve this problem?

PS. It`s important to call Hr_manager() and Technical_manager() in It_company()

Please help!

I don’t think you can do that. You can only interact with vector technical_manager and vector hr_manager you declared in It_Company.

OK. How can I do such thing:If I create object of class It_company objects of classes technical_manager and hr_manager are creating automatically?