C++ | Virtual Functions | Question 6
Predict the output of following program.
#include<iostream> using namespace std; class Base { public: virtual void show() = 0; }; class Derived : public Base { }; int main(void) { Derived q; return 0; } |
(A) Compiler Error: there cannot be an empty derived class
(B) Compiler Error: Derived is abstract
(C) No compiler Error
Answer: (B)
Explanation: If we don’t override the pure virtual function in derived class, then derived class also becomes abstract class.
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