To make use of a virtual function in numerous ways, an application may utilise base class pointers or references to activate a virtual function.
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To make use of a virtual function in numerous ways, an application may utilise base class pointers or references to activate a virtual function.
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- In order to use the same virtual function in a variety of forms and structures, a software application may need to execute a virtual function defined in a base class. A base-class reference or pointer is required.When using pointers or references to a base class, how should software invoke the same virtual function in different forms and structures?Home Activity Your task is to create two classes namely data and calculation. The calculation class is a friend of the data class. The data class will be composed of two floating point data members namely a and b. The class will also be composed of a friend function display that can display all the data members. Course: CSCL-1208 Object Oriented Programming Techniques The calculation class is responsible for performing operations on the data class and hence it has three functions as follows: • A function to compute the Square of sums i.e. (a + b) =a²+ b² +2ab •A function to compute the Square of difference i.e. (a - b)² =a²+ b? -2ab
- Object can’t be used with pointers because they belong to user defined class, and compiler can’t decide the type of data may be used inside the class. a) True b) FalsePointer variable stores the address where another object resides and system will automatically do garbage collection. Group of answer choices True Falseobject oriented programing Design a class that has an array of floating-point numbers. The constructor should accept an integer argument and dynamically allocate the array to hold that many numbers. The destructor should free the memory held by the array. In addition, there should be member functions to perform the following operations: • Store a number at any index of the array • Retrieve a number from any index of the array • Return the highest value stored in the array • Return the lowest value stored in the array • Return the average of all the numbers stored in the array
- functions return the value of a data member. A. Accessor OB. Member C. Mutator OD. UtilityC++HurdleGame The HurdleGame class contains all the functions invoked as a result of a user action (i.e. when a user presses a key on the Hurdle Frontend, one of the functions in HurdleGame will be called. A HurdleGame object comprises a HurdleWords object (which stores all valid guesses and valid Hurdles), and a HurdleState object, which stores and tracks all the game states. Any action should update the HurdleState object.Each function in HurdleGame is called as a result of a user action on the Hurdle Frontend. To understand this, please read the Hurdle Backend API section below before implementing. You are responsible for implementing each of the functions below. LetterEntered ● Called by the Hurdle frontend when the user enters a letter. ● Hint: when a user enters a letter, how should the underlying HurdleState be modified to reflect the change resulting from that key press? WordSubmitted ● Called by the Hurdle front end when the user submits a guess by pressing enter. ● Hint: when…std::shared_ptr is a class that implements the concept of _____. Select one: a. shared ownership of the pointer it contains b. exclusive ownership of the pointer it contains c. no ownership of the pointer it contains d. partial ownership of the pointer it contains
- When using a virtual function that is part of a base class, how should a programme make the call?Question Object Oriented Programming c++ Write a program that defines a class with a data member to holds a "serial number" for each object created from the class. That is, the first object created will be numbered 1, the second 2, and so on. To do this, you'll need another data member that records a count of how many objects have been created so far. (This member should apply to the class as a whole; not to individual objects. What keyword specifies this?) Then, as each object is created, its constructor can examine this count member variable to determine the appropriate serial number for the new object. Add a member function that permits an object to report its own serial number. Then write a main() program that creates three objects and queries each about its serial number. They should respond I am object number 2, and so on.c++ programming language given the following variable declaration: double avg; write the required commands to declare a pointer, and then use it to display the value of the variable avg.