Linker Error

I have never had this problem before, and now i'm adding classes to my RPG, and all of the sethp,mp,etc says [Linker error] undefined reference to `User::sethp(int)' or something like that. What's wrong?

You're calling User::sethp(int), and it isn't declared.

You may have declared a method for your class but you lack the implementation for it, as an example:

Code:

class myclass
{
public:
    void bar(void);
};

int main()
{
    myclass foo;
    foo.bar();
    return 0;
}

The class has a method called bar declared but there is no implementation for it anywhere. You would need to add the implementation:

Code:

void myclass::bar(void)
{
    ...
}

yea just went back in some tuts and found that out. I learned inhertiance and some poly, and i didn't know something like that, dumb.

oh I get it now... I thought u didn't have to do that

I thought u could just sethp();

Code:

class User 
public:
User();
~User();
int gethp() { return hp }
void sethp(int hp);
private:
int hp
}

doesn't work as an example?

Code:

class User
{
public:
User();
~User();
int gethp() { return hp; }
void sethp(int hp);
private:
int hp;
};

Well, aside from the missing semicolons and bracket, that would need the implementation for the sethp method for it to work. You could either include the implementation as you've done with the gethp method (as a part of the class declaration) or you would need to define it elsewhere.