Consider the following C++ code: #include

Solution

o In C++, Base is declared with virtual void show() = 0;, which makes show() a pure virtual function. o Any class that contains one or more pure virtual functions is an abstract class. o Abstract classes cannot be instantiated directly. Attempting to create an object of an abstract class (like Base b;) will result in a compile-time error. The compiler will typically issue a message similar to "cannot declare variable 'b' to be of abstract type 'Base'" or "cannot instantiate abstract class 'Base'".