What does the following code output? (What's the order of construction/destruction) #include class Ball ( public: Ball () { std::cout << "Ball ()" <« std::endl; } -Ball () { std::cout <« "-Ball ()" << std::endl; } }: class Bat { public: Bat () { std::cout < "Bat ()" <« std::endl; } -Bat () { std::cout << "-Bat ()" << std::endl; } }; class Sport { public: Sport () { std::cout <« "Sport ()" <« std::endl; } -Sport () { std::cout << "-sport ()" « std::endl; } }; class BallGame : public Sport { public: BallGame (): sport () { std::cout <« "BallGame ()" <« std::endl; } -BallGame () ( std::cout « "-BallGame ()" << std::endl; } private: Ball ball; }: class Baseball : public BallGame { public: Baseball (): BallGame () { std::cout « "Baseball()" <« std::endl; } -Baseball () { std::cout « "-Baseball ()" <« std::endl; } private: Bat bat; };

What does the following code output? (What's the order of construction/destruction) #include class Ball ( public: Ball () { std::cout << "Ball ()" <« std::endl; } -Ball () { std::cout <« "-Ball ()" << std::endl; } }: class Bat { public: Bat () { std::cout < "Bat ()" <« std::endl; } -Bat () { std::cout << "-Bat ()" << std::endl; } }; class Sport { public: Sport () { std::cout <« "Sport ()" <« std::endl; } -Sport () { std::cout << "-sport ()" « std::endl; } }; class BallGame : public Sport { public: BallGame (): sport () { std::cout <« "BallGame ()" <« std::endl; } -BallGame () ( std::cout « "-BallGame ()" << std::endl; } private: Ball ball; }: class Baseball : public BallGame { public: Baseball (): BallGame () { std::cout « "Baseball()" <« std::endl; } -Baseball () { std::cout « "-Baseball ()" <« std::endl; } private: Bat bat; };

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Create parent class Shapes with protected parameters width and height and function printarea() and a virtual function cal_area(). Create two sub classes Rectangle and Sqaure. In main() create 2 pointers of Shapes and assign Rectangle and Square to it. Call printarea function with the pointers. Note: Use C++ language with well explaination. After performing this program. Implement this program using an abstract class.
- Implement the class “cylinder” with member variables radius and height, whichare private of type double. Define the global constant PI=3.1415 and use it incalculating the volume of the cylinder (PI*radius*radius*height).Implement in the class cylinder the following functions:a- A default constructor with default values of one.b- One constructor with two arguments. This constructor should check that thevariable is positive and does not exceed 20, otherwise the variable will beassigned its default value of one.c- A reader for each variable.d- A writer for each variable.e- A reader and a writer for diameter.f- A member function “volume” which calculates the volume of a cylinder.g- A member function “print” which prints the radius, diameter, and height of acylinder.h- A member function display_name() which displays “cylinder”.2- Write a program which declares an array of n cylinders (use n=5). Initialize thearray values by writing a loop which asks the user to input the radius and…
write a class Point with parametrized constructor. This class have four member variables, a,b,c,d. Write the following member functions a. drawTriangle(int x, int y, int z ) b. drawRectangle(int x, int y, int z, int a). Each function should display the length of lines for each of the shape (triangle, rectangle). For example triangle should calculate length of its three lines by following methods as shown in code. Note: the number of lines depends on the name of shape. void drawTriangle(int x, int y, int z ) { int line 1 = x - y; // convert to positive value if line length is negative int line 2 = y -z; int line 3 = z -x; cout<< The length of each lines is: << //// here display length of each line with proper formatting. } Write similar code for drawRectangle(int x, int y, int z, int a). Wtite main function to call these three function
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48. What are the places in the bag template class where the name bag is not changed to bag<Item>? a. class name b. name of the constructor c. name of the copy constructor d. non member function e. destructor Group of answer choices a, b, and c a, and b a a, b, c, d, and e a, b, c, and e
c++ Write a class called Triangle with three private integer data members a, b, and c as the lengths of its three edges. This class should have the following functions:  a constructor with three parameters representing the three edges a function isTriangle() which returns true if the three edges are all positive and they satisfy the triangle inequality where a+b> c, a+c> b, b+c> a, otherwise returns false. a function getPerimeter() which returns the perimeter of the triangle. (where, the perimeter = a+b+c)Then, test the above class in a program.
Create parent class Shapes with protected parameters width and height and function printarea() and a virtual function cal_area(). Create two sub classes Rectangle and Sqaure. In main() create 2 pointers of Shapes and assign Rectangle and Square to it. Call printarea function with the pointers. Implement using abstract class. Note: use OOP and C++
Create parent class Shapes with protected parameters width and height and function printarea() and a virtual function cal_area(). Create two sub classes Rectangle and Sqaure. In main() create 2 pointers of Shapes and assign Rectangle and Square to it. Call printarea function with the pointers. Note: use OOP C++
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Use the following partial class definitions to answer the questions a-c public class A1 { public int x; private int y; protected int z; ... } public class A2 extends A1 { protected int a; private int b; ... } public class A3 extends A2 { private int q; ... } a) Which of the following is true with respect to A1, A2 and A3? Group of answer choices A1 is a subclass of A2 and A2 is a subclass of A3 A3 is a subclass of A2 and A2 is a subclass of A1 A1 and A2 are both subclasses of A3 A2 and A3 are both subclasses of A1 A1, A2 and A3 are all…
In C++ The base class Pet has private data members petName, and petAge. The derived class Dog extends the Pet class and includes a private data member for dogBreed. Complete main() to: create a generic pet and print information using PrintInfo(). create a Dog pet, use PrintInfo() to print information, and add a statement to print the dog's breed using the GetBreed() function. Ex. If the input is: Dobby2Kreacher3German Schnauzer the output is: Pet Information: Name: Dobby Age: 2Pet Information: Name: Kreacher Age: 3 Breed: German Schnauzer
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