Ebben a kódban mi a hiba?

#include <iostream>

using namespace std;

class Cat

{

public:

int GetAge();

void SetAge (int age);

void Meow();

private:

int itsAge;

}

int Cat::GetAge()

{

return itsAge;

}

void Cat::SetAge(int age)

{

itsAge=age;

}

void Cat::Meow()

{

cout<<"xyz.\n";

}

int main()

{

Cat Frisky;

Frisky.SetAge(5);

Frisky.Meow();

cout<<"Frisky is a cat who is";

cout<<Frisky.GetAge()<<"years old.\n";

Frisky.Meow();

system("pause>nul");

return 0;

}