sahu

 Profile Answers by sahu Questions by sahu

• Dec 9th, 2005

 

ans:

yes, we can.

samiksc

 Profile Answers by samiksc 

• Jan 20th, 2006

 

Yes,

In C++ we can derive a class C from B which is derived from A -- multilevel inheritance.

In C++ we can derive a class D from two base classes A and B -- multiple inheritance. This may cause a problem in case A and B are derived from a single base class say P. When a D's method refers to a public/protected data member of P (the uppermost parent) there are two paths available -- A::var or B::var -- here the compiler gives an error. To avoid this problem A and B need to be 'virtually' derived from P. If they are virtually derived then only one copy of P's data members exist for both A and B objects.