What methods would you add to make this class declarationvery useful?
class cat
{
int getage() const;
private:
int itsage;
};

Category(int age)- This method is used to declaring the age.

incrementingAge(int age)-This method is used for incrementing  the age.

SettingAge(int age) -This method is used to initializing the age.

These are the three methods for making declaration very useful.

Explanation:

Class Cat

{

public:

Category(int age)

{

itsAge =age;

}

int incrementingAge(int age)

{

itsAge = itsAge+ age;

}

int SettingAge(int age)

{

itsAge =age;

}

int GetAge() const;

private:

         int itsAge;

};

void SetAge(int age) , void meow()

Explanation:

Since the class has an itsAge variable as private and has a GetAge() method. There should be a SetAge() method to set the value of the age.

Also, since it is a Cat class, it is better to have a method that mimics the voice of the cat, meow()