Sorry, borrow a place. ;)
We generally use the following ways in class overload:
Class base {void echo () {printf ("echo from base");}};
Class Middle: Public Base {}
Class Child: public middle {}
It can be clearly seen that the overload process is base-> middle-> child. Such a structure can use the default overload mode.
Void main () {Child C; c.echo (); // correct.
But at some point, we need to separate several subclasses from the base class, and then multiple inheritances by subclasses, this time the method will be wrong.
such as:
Class base {void echo () {Printf ("Echo from Base class overload us generally use the following way:
Class base {void echo () {printf ("echo from base");}};
Class Middle: Public Base {}
Class Child: public middle {}
It can be clearly seen that the overload process is base-> middle-> child. Such a structure can use the default overload mode.
Void main () {Child C; c.echo (); // correct.
But at some point, we need to separate several subclasses from the base class, and then multiple inheritances by subclasses, this time the method will be wrong.
such as:
Class base {void echo () {printf ("echo from base
