How ambiguity arises in multipath inheritance? How can you remove this type of ambiguity? Explain with suitable example.

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Suresh Chand · Accepted Answer

Multipath Inheritance is a derivation of a class from other derived classes, which are derived from the same base class. In this type of inheritance, there involves other inheritance like multiple, multilevel, hierarchical etc. There is ambiguity in this type of inheritance. Ambiguity in Multipath Inheritance: Suppose we have classes A, B, C and D. classes B and C are derived from A and class D is derived from classes B and C. Both derived classes inherits the features of base class. Hence when we derive a new class by inheriting features form these two classes derived from the same base class, then same features from the first base is inherited to the finally derived class from two paths. This cause ambiguity in accessing first base class members. # include class A { private: //... public: void display(){ //... } }; class B: public A { //... }; class C: public A { //.. }; class D: public B, public C { //... }; int main(){ D obj; obj.display(); return 0; } To eliminate this problem, C++ has a mechanism to inherit a single copy of properties from the common base class. This is done by declaring the base class as virtual while creating derive classes from this base class. After removing ambiguity :- # include class A { private: //... public: void display(){ //... } }; class B: virtual public A { //... }; class C: virtual public A { //.. }; class D: public B, public C { //... }; int main(){ D obj; obj.display(); return 0; }

How ambiguity arises in multipath inheritance? How can you remove this type of ambiguity? Explain with suitable example.

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How ambiguity arises in multipath inheritance? How can you remove this type of ambiguity? Explain with suitable example.

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