Computer Science Canada

Inheritance/Constructor problem
Author:  Dwindle [ Mon Mar 27, 2006 10:50 am ]
Post subject:  Inheritance/Constructor problem
code:
class Base
{
      protected:
            int x, y;
      public:
            Base() : x(0), y(0)
                  { }
            Base(int nx, int ny) : x(nx), y(ny)
                  { }
};

class Derived : public Base
{
      protected:
            int z;
      public:
            Derived() : x(0), y(0), z(0)
                  { }
};



I get an error at the Derived constructor line when I try to compile. Apparently the x and y fields don't exist but I know it does since it's inherited from the base class. Also if I put it as normal assignment statements inside the brackets it'll work but I really shouldn't have to do that should I? This is the simplified version of an actual program I'm working on and I wanted to split up the initializing variables part of the contructor from some stuff I actually wanted it to do. I'm using Dev-Cpp and I'm wondering if this code works ok for other people.

Also how do I indent certain lines when I post? I tried just adding spaces before but that doesnt work.
Author:  wtd [ Mon Mar 27, 2006 12:47 pm ]
Post subject: 
Use code tags.

code:
[code]foo   bar[/code]


code:
foo   bar


As for your problem... why are you not simply calling the Base class' constructor from the Derived class?
Author:  Dwindle [ Mon Mar 27, 2006 8:15 pm ]
Post subject: 
thanks, both problems solved.

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