Chapter 16: Problem 43

T \(\quad\) F \(\quad\) A class template may not be used as a base class.

Short Answer

Expert verified

Short Answer: The statement "A class template may not be used as a base class" is false (F). Class templates can be used as base classes in C++ to create derived classes with the generic functionality provided by the base class template.

Step by step solution

Understand class templates in C++

In C++, class templates are used to create generic classes that can work with various data types without having to create new classes explicitly for each data type. For example, a class template can be created for a container class like a stack or a queue to hold different data types (e.g., int, float, char, etc.) without writing separate classes for each data type.

Understand inheritance and base classes in C++

Inheritance is a key concept in object-oriented programming languages like C++. It allows us to create a new class (called derived class) while inheriting the properties and methods of another existing class (called base class). In this way, we can reuse and extend the functionality of the base class without having to rewrite the code.

Using class templates as base classes

Now that we understand what class templates are and how inheritance works in C++, let's address the main question: whether a class template can be used as a base class or not. The answer is yes, a class template can indeed be used as a base class in C++. To do this, we need to define a class template first, then create a derived class that inherits from the class template while specifying the required data type. For example, consider a simple class template called 'BaseContainer': ```cpp template class BaseContainer { public: void storeData(T data) { // Store the data of type T. } }; ``` Now, let's create a derived class that inherits from 'BaseContainer': ```cpp template class DerivedStack : public BaseContainer { public: void push(T data) { // Call the storeData method from the base class. this->storeData(data); } }; ``` In the above example, the 'DerivedStack' class inherits from the 'BaseContainer' class template, using the specified data type 'T'. This means that we can create a 'DerivedStack' object for various data types like int, float, char, etc., and the derived class will inherit the functionality of the base class template.

Conclusion

Based on the above explanation and example, the statement "A class template may not be used as a base class" is false (F). Class templates can indeed be used as a base class in C++, allowing us to create derived classes with the generic functionality provided by the base class template.

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T \(\quad\) F \(\quad\) A class template may not be used as a base class.

Short Answer

Step by step solution

Understand class templates in C++

Understand inheritance and base classes in C++

Using class templates as base classes

Conclusion

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