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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Concept explainers

OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

Question

What does the following code output? (What's the order of construction/destruction)
#include <iostream>
class Bal {
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;
};

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