class object's function that has function.

[yj1214]

Foo *myDevice = getDevice("hello");
Ham *myDriver = myDevice->getDriver();

^above is what I want to do.


below is how my classes and functions are made.

class Foo{
    public:
        void setName(string text){
            name = text;
        }
        string getName(){
            return name;
        }
        void printName(){
            cout << name << endl;
        }
        Ham *getDriver(){
            Ham *driver = new Ham;
            
            cout << "driver" << endl;
            
            return driver;
        }
    private:
        string name;
};

class Ham{
    public:
        void printDriver(){
            cout << "driver" << endl;
        }
};

Foo *getDevice(string name = "name not defined"){
    Foo *device = new Foo;
    device->setName(name);
    device->printName();
    
    cout << device << endl;
    
    return device;
}

Foo *getDriver(){
    Foo *driver = new Ham;
    
    return driver;
}



int main(){
    Foo *myDevice = getDevice("hello");
    Ham *myDriver = myDevice->getDriver();

    return 0;
}

I'm getting an error around myDevice->getDriver();.

Should getDriver() return Ham object? How would you make Ham object be able to use getDriver()? thanks.

[keskiverto]

Your problem is that on line 13 you have to know the definition of Ham, but you define Ham much later, on lines 23-28. Move Ham's definition to before Foo's definition.


PS. Lines 40-44 make no sense.