True or false ? Assuming class Quiz { public: void TakeIt ( ); }; Quiz cs2b_quiz; Quiz * p_quiz = & cs2b_quiz; The syntax to invoke TakeIt ( ) member function using the pointer is: p_quiz->TakeIt ( );
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True or false ?
Assuming
class Quiz { public: void TakeIt ( ); }; Quiz cs2b_quiz; Quiz * p_quiz = & cs2b_quiz;
The syntax to invoke TakeIt ( ) member function using the pointer is:
p_quiz->TakeIt ( );
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- Smart Pointer: Write a smart pointer class. A smart pointer is a data type, usually implemented with templates, that simulates a pointer while also providing automatic garbage collection. It automatically counts the number of references to a SmartPointer<?> object and frees the object of type T when the reference count hits zero.complex.h #pragma once #include <iostream> #include "imaginary.h" using namespace std; class Complex { private: int real; Imaginary imagine; public: //YOU: Implement all these functions Complex(); //Default constructor Complex(int new_real, Imaginary new_imagine); //Two parameter constructor Complex operator+(const Complex &rhs) const; Complex operator-(const Complex &rhs) const; Complex operator*(const Complex &rhs) const; bool operator==(const Complex &rhs) const; Complex operator^(const int &exponent) const; friend ostream& operator<<(ostream &lhs,const Complex& rhs); friend istream& operator>>(istream &lhs,Complex& rhs); }; complex.cc #include <iostream> #include "complex.h" using namespace std; //Class definition file for Complex //YOU: Fill in all of these functions //There are stubs (fake functions)…C++ language patient.h /*preventing multiple inclusion of header files using#ifndef and #define directives */#ifndef PATIENT_H#define PATIENT_H#include<iostream>using namespace std;class patient{ //declaring instance variables private: string firstName; string lastName; int id; public: //default constructor declaration patient(); //parameterized constructor declaration patient(string fName,string lName,int pId); //print() function declaration void print(); //setter functions declaration void setFirstName(string fName); void setLastName(string lName); void setId(int pId);};#endif patient class implementation patient.cpp #include "patient.h"//default constructor implementationpatient::patient(){ firstName=""; lastName=""; id=0;}//parameterized constructor implementationpatient::patient(string fName,string lName,int pId){ firstName=fName; lastName=lName; id=pId;}//print function…
- // This program reads floating point data from a data file and places those // values into the private data member called values (a floating point array) // of the FloatList class. Those values are then printed to the screen.// The input is done by a member function called GetList. The output// is done by a member function called PrintList. The amount of data read in // is stored in the private data member called length. The member function// GetList is called first so that length can be initialized to zero.#include <iostream>#include <fstream>#include <iomanip> using namespace std;const int MAX_LENGTH = 50; // MAX_LENGTH contains the maximum length of our list class FloatList // Declares a class that contains an array of// floating point numbers{ public:void getList(ifstream&); // Member function that gets data from a file void printList() const;// Member function that prints data from that // file to the screen.FloatList();// constructor that sets length to…When defining an array of a classtype, a C++ programmer has no way to specify which overloaded constructor is used on each declared array element, as the default no-argument constructor will always be used no matter what. True O FalseCONSTRUCTOR// IntSet()// Pre: (none)// Post: The invoking IntSet is initialized to an empty// IntSet (i.e., one containing no relevant elements).// CONSTANT MEMBER FUNCTIONS (ACCESSORS)// int size() const// Pre: (none)// Post: Number of elements in the invoking IntSet is returned.// bool isEmpty() const// Pre: (none)// Post: True is returned if the invoking IntSet has no relevant// relevant elements, otherwise false is returned.// bool contains(int anInt) const// Pre: (none)// Post: true is returned if the invoking IntSet has anInt as an// element, otherwise false is returned.// bool isSubsetOf(const IntSet& otherIntSet) const// Pre: (none)// Post: True is returned if all elements of the invoking IntSet// are also elements of otherIntSet, otherwise false is// returned.// By definition, true is returned if the invoking IntSet// is empty (i.e., an empty IntSet…
- Write C++ code for a class named MuniBus that has the following private member variables: int totalPassengers; double faresCollected; and the following public member functions: void passengerBoard() - adds 2.50 to faresCollected and adds 1 to totalPassengers double getFaresCollected() - returns faresCollected int getPassengers() - returns totalPassengers void reset() - sets totalPassengers and faresCollected to zero MuniBus() - default constructor. Initializes both totalPassengers and faresCollected to 0 MuniBus(int tp, double fc) - constructor which initializes totalPassengers to tp, faresCollected to fc ~MuniBus() - destructor. Prints out a message saying that the bus is being destroyed, and also prints out totalPassengers and faresCollected. Write the class declaration and implement all of the constructors, the destructor, and member functions. You do not need to demonstrate using your class or show output.The following class definitions and function definitions should be used to help you finish the exam. train.h: car.h: #ifndef CAR_H #define CAR_H using namespace std; class Car #include "car.h" using namespace std; #ifndef TRAIN_H #define TRAIN_H class Train { private: Car* tHead; Car* tTail; public: Train(); -Train(); void addcarBack(Car *); void deleteFirstcar(); void removeFirstcaróftype(const string &); { private: string name; double maxSpeed; public: Car* nextcar; public: car(); Car(string); double getMaxspeed () const; string getName() const; void setName(const string &); }; #endif // Display list car by car void display() const; }; #endif Part of train.cpp: // addcarBack logic: if (traincarsHead == 0) { traincarsHead = toAdd; traincarsTail = toAdd; else { traincarstail->nextcar = toAdd; traincarsTail = toAdd;C:/Users/r1821655/CLionProjects/untitled/sequence.cpp:48:5: error: return type specification for constructor invalidtemplate <class Item>class sequence{public:// TYPEDEFS and MEMBER SP2020typedef Item value_type;typedef std::size_t size_type;static const size_type CAPACITY = 10;// CONSTRUCTORsequence();// MODIFICATION MEMBER FUNCTIONSvoid start();void end();void advance();void move_back();void add(const value_type& entry);void remove_current();// CONSTANT MEMBER FUNCTIONSsize_type size() const;bool is_item() const;value_type current() const;private:value_type data[CAPACITY];size_type used;size_type current_index;};} 48 | void sequence<Item>::sequence() : used(0), current_index(0) { } | ^~~~ line 47 template<class Item> line 48 void sequence<Item>::sequence() : used(0), current_index(0) { }
- class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here/* Interface File: Movie.h Declaration of Movie Class (Variables - "Data Members" or "Attributes" AND Functions - "Member Functions" or "Methods") */ #ifndef MOVIE_H // Include Guard or Header Guard -If already defined ignore rest of code #define MOVIE_H // Otherwise, define MOVIE_H #include<string> // Note: Not "using namespace std;" or even "using std::string" class Movie { private: std::string title = ""; // Explict scope used --> std::string int year = 0; public: Movie(std::string title = "", int year = 1888); // Declaring a Default Constructor ~Movie(); // A Destructor used for freeing up resources void set_title(std::string title_param); std::string get_title() const; // "const" safeguards class variable changes within function std::string get_title_upper() const; void set_year(int year_param); int get_year() const; }; //…class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };
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