2. Controlling object creation

• Objects are more useful if program can specify the details of their instantiation

• This is done by declaring objects and controlling the semantics of object creation

• The goal is to create objects which are always in a good state...

  • or at least identifiably in a bad state.

    
        #include "point.h"
        int main()
        {
            Point pt( 5, 10 ); // construct object with initial values
            //...
        }