Which of the following declares an abstract method in an abstract C++ class? (Points : 2) public: void print();
public: void print() {}
public: virtual void print() {}
public: virtual void print()=0;

An abstract class contains a pure virtual function. Pure virtual class cannot be instantiated but it can be subclassed and the subclass can provide an implementation of the function.

A virtual function declaration in the class is preceded by the virtual keyword. For example, virtual void print();

A pure virtual function declaration is followed by '=0;'

public: virtual void print()=0;

Which of the following declares an abstract method in an abstract C++ class? (Points : 2) public: void print(); public: void print() {} public: virtual void print() {} public: virtual void print()=0;

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Which of the following declares an abstract method in an abstract C++ class? (Points : 2) public: void print();
public: void print() {}
public: virtual void print() {}
public: virtual void print()=0;