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C++ | Inheritance | Question 4

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using namespace std;
class P {
   void print()  { cout <<" Inside P"; }
class Q : public P {
   void print() { cout <<" Inside Q"; }
class R: public Q { };
int main(void)
  R r; 
  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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Last Updated : 28 Jun, 2021
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