a. The constructor of a derived class specifies a call to the constructor of the base class in the heading of the function definition. b. The constructor of a derived class specifies a call to the constructor of the base class using the name of the class.
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//The language is c++
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- To overload the pre-increment operator for a class as a member function, how many arguments are required? b.When overloading the pre-increment operator for a class as a friend function, how many arguments are required?create a base class and derive classes all having functions with the same name, excess the function using pointer and virtual functions using c++Once a function is declared as virtual, it remains virtual for the next derived class only if there is a virtual declaration in the derived class.
- Both child class and its parent class have same function signature. Which version of function will be called by the object pointer of parent class that is pointing to the child class’s object? Explain the reason. When do we need to use virtual function? Explain with example programb) When dealing with constructors, destructors, and member functions, which access specifier should be used? To what purpose?What criteria should be considered by the code to determine whether or not to make use of a virtual function from a base class?
- When a virtual function is declared in a base class, what is the appropriate method for its implementation to invoke the real call?Suppose the base class and the derived class each have a member function with the same signature. When you have a pointer to a base class object and call a function member through the pointer, discuss what determines which function is actually called—the base class member function or the derived-class function.accessing virtual functions in different implementations of a program by pointing or referring to the base classes they are defined in.
- b) When dealing with constructors, destructors, and member functions, which access specifier should be used? Toward what end? .C++ Code Step 1: Preparation For the moment, "comment out" the following under-construction code: In dynamicarray.h: All function prototypes except the constructors and destructor. Keep the member variables (but we will be replacing them shortly). In dynamicarray.cpp: All function implementations except the constructors and destructor. You should also remove (not just comment out) INITIAL_CAP, and replace it with a hard-coded 10 inside the default constructor. This will also eventually go away. In main: Comment out all the code inside the RunPart1Tests function between the linesbool pass = true; and return pass; • Also in main: Comment out all the code in the main function starting with the "Equality comparison" comment and just before the "return 0;" line. Step 2: Replacing member data and the two constructors You're going to replace the current member data (arr, len, and capacity) with a single vector of integers. Remember that vectors keep track of their own size and capacity, so…Redo Programming Exercise 3 by overloading the operators as nonmembers of the class boxType. Write a test program that tests various operations on the class boxType. Reference: Chapter 11 defined the class boxType by extending the definition of the class rectangleType. In this exercise, derive the class boxType from the class rectangleType, defined in Exercise 1, add the functions to overload the operators +,–, *, ==, !=, <=, <, >=, >, and pre- and post-increment and decrement operators as members of the class boxType. Also overload the operators << and >>. Overload the relational operators by considering the volume of the boxes. For example, two boxes are the same if they have the same volume. Write the definitions of the functions of the class boxType as defined above and then write a test program that tests various operations on the class.