Itt miért hívódik meg kétszer az operator ushort? C++.

A kimenetben látszik(mert ki iratom),hogy ez a kódsor lefutásakor(*Kokszos = *Bolyhos + *Morcos;) meghívódik kétszer az operator ushort függvény ezt nem értem.Miért?

Ha lehetne még egy kérdésem akkor mondjátok meg,hogy miért dob hibát ha ++(*Morcos) a morcos itt nem teszem zárójelbe?

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//main.cpp

# include <iostream> //std::cout,std::cin,std::endl

# include <string> //std::string

# include <windows.h> //Sleep(1000),exit(0)

# include <stdlib.h> //EXIT_SUCCESS

typedef unsigned short ushort; //szinoníma készítése az unsigned short-ra.

typedef unsigned int uint; //szinoníma készítése az unsigned int-re.

using std::cout; //cout esetén mindig az std:: névteret használjuk.

using std::cin; //cin esetén mindig az std:: névteret használjuk.

using std::endl; //endl esetén mindig az std:: névteret használjuk.

using std::string; //string esetén mindig az std:: névteret használjuk.

//CAT osztály

class CAT

{

public:

CAT(); //Konstruktor1

CAT(ushort age,ushort weight); //Konverziós konstruktor2

CAT(const CAT &rhs); //Copy konstruktor

~CAT(); //Destruktor

const CAT operator=(const CAT &rhs); //operator=

const CAT& operator++(); //prefix

const CAT operator++(int); //postfix

const CAT operator+(const CAT &rhs); //operator+

operator ushort()const; //konverziós operátor

void SetAge(ushort age); //SetAge

ushort GetAge()const; //GetAge

void SetWeight(ushort weight); //SetWeight

ushort GetWeight()const; //GetWeight

private:

ushort *itsAge;

ushort *itsWeight;

};

//CAT osztály definíció

//Konstruktor1,Konstruktor2,Copy konstruktor,destruktor,operator=

CAT::CAT():

itsAge(new ushort(0)),

itsWeight(new ushort(0))

{cout <<"Konstruktor1 \n";}

CAT::CAT(ushort age,ushort weight = 0):

itsAge(new ushort(age)),

itsWeight(new ushort(weight))

{cout <<"Konstruktor2 \n";}

CAT::CAT(const CAT &rhs)

{

cout <<"Copy konstruktor \n";

itsAge = new ushort;

itsWeight = new ushort;

*itsAge = rhs.GetAge();

*itsWeight = rhs.GetWeight();

}

CAT::~CAT()

{

cout <<"Destruktor \n";

delete itsAge;

delete itsWeight;

itsAge = NULL;

itsWeight = NULL;

}

const CAT CAT::operator=(const CAT &rhs)

{

cout <<"operator= \n";

if(this==&rhs)

return *this;

delete itsAge;

delete itsWeight;

itsAge = new ushort;

itsWeight = new ushort;

*itsAge = rhs.GetAge();

*itsWeight = rhs.GetWeight();

return *this;

}

//operator++ pre,operator++ post,operator+,operator ushort

const CAT& CAT::operator++()

{

cout <<"operator++ prefix \n";

++*itsAge;

return *this;

}

const CAT CAT::operator++(int)

{

cout <<"operator++ postfix \n";

++*itsAge;

return *this;

}

const CAT CAT::operator+(const CAT &rhs)

{

cout <<"operator+ \n";

return CAT(*itsAge+rhs.GetAge(),*itsWeight+rhs.GetWeight());

}

CAT::operator ushort()const

{

cout <<"operator ushort \n";

return(ushort(*itsAge));

}

void CAT::SetAge(ushort age)

{*itsAge = age;}

ushort CAT::GetAge()const

{return *itsAge;}

void CAT::SetWeight(ushort weight)

{*itsWeight = weight;}

ushort CAT::GetWeight()const

{return *itsWeight;}

//main start

int main()

{

ushort age = 200;

const CAT *const Bolyhos = new CAT(4,7);

CAT *const Morcos = new CAT(2,3);

CAT *Kokszos = new CAT;

const CAT &Bolyhos2 = *Bolyhos;

cout <<"\nAGE: \n"

<<"Bolyhos most "<< Bolyhos->GetAge() <<" eves \n"

<<"Bolyhos2 most "<< Bolyhos2.GetAge() <<" eves \n"

<<"Morcos most "<< Morcos->GetAge() <<" eves \n"

<<"Kokszos most "<< Kokszos->GetAge() <<" eves \n\n"

<<"WEIGHT: \n"

<<"Bolyhos most "<< Bolyhos->GetWeight() <<" kg \n"

<<"Bolyhos2 most "<< Bolyhos2.GetWeight() <<" kg \n"

<<"Morcos most "<< Morcos->GetWeight() <<" kg \n"

<<"Kokszos most "<< Kokszos->GetWeight() <<" kgs \n\n";

cout <<"CALL *Kokszos = *Bolyhos + *Morcos: \n";

*Kokszos = *Bolyhos + *Morcos;

cout <<"\nCALL age = Bolyhos2: \n";

age = Bolyhos2;

cout <<"\nCALL *Morcos = age: \n";

*Morcos = age;

cout <<"\nCALL ++(*Morcos): \n";

++(*Morcos);

cout <<"\nCALL (*Morcos)++: \n";

(*Morcos)++;

cout <<"\nAGE: \n"

<<"Bolyhos most "<< Bolyhos->GetAge() <<" eves \n"

<<"Bolyhos2 most "<< Bolyhos2.GetAge() <<" eves \n"

<<"Morcos most "<< Morcos->GetAge() <<" eves \n"

<<"Kokszos most "<< Kokszos->GetAge() <<" eves \n\n"

<<"WEIGHT: \n"

<<"Bolyhos most "<< Bolyhos->GetWeight() <<" kg \n"

<<"Bolyhos2 most "<< Bolyhos2.GetWeight() <<" kg \n"

<<"Morcos most "<< Morcos->GetWeight() <<" kg \n"

<<"Kokszos most "<< Kokszos->GetWeight() <<" kg \n\n";

delete Bolyhos;

delete Morcos;

delete Kokszos;

return EXIT_SUCCESS;

}