C++ | Inheritance | Question 4

#include<iostream>
 
using namespace std;
class P {
public:
   void print()  { cout <<" Inside P"; }
};
 
class Q : public P {
public:
   void print() { cout <<" Inside Q"; }
};
 
class R: public Q { };
 
int main(void)
{
  R r; 
  r.print();
  return 0;
}

(A) Inside P
(B) Inside Q
(C) Compiler Error: Ambiguous call to print()


Answer: (B)

Explanation: The print function is not present in class R. So it is looked up in the inheritance hierarchy. print() is present in both classes P and Q, which of them should be called? The idea is, if there is multilevel inheritance, then function is linearly searched up in the inheritance hierarchy until a matching function is found.

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