Answered: class temporary { public: void…

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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Question

class temporary
{
public:
void set(string, double, double);
void print();
double manipulate();
void get(string&, double&, double&);
void setDescription(string);
void setFirst(double);
void setSecond(double);
string getDescription() const;
double getFirst()const;
double getSecond()const;

temporary(string = "", double = 0.0, double = 0.0);

private:
string description;
double first;
double second;
};

I need help writing the definition of the member function set so the instance varialbes are set according to the parameters.

I also need help in writing the definition of the member function manipulation that returns a decimal with: the value of the description as "rectangle", returns first * second; if the value of description is "circle", it returns the area of the circle with radius first; if the value of the description is "cylinder", it returns the volume of the cylinder with radius first and height second; otherwise, it returns with the value -1.

Expert Solution

Step 1: Algorithm of the Code:

Algorithm:

Include necessary libraries:
- Include the required C++ libraries for input and output (iostream), string handling (string), and formatting (iomanip).
Define the temporary class:
- Declare the temporary class with public and private sections.
- Inside the public section, declare member functions:
  - set for setting instance variables.
  - print for printing values.
  - manipulate for calculating based on the description.
- Inside the private section, declare instance variables for description, first, and second.
Constructor for temporary class:
- Define a constructor for the temporary class that initializes instance variables using the set function.
Define the set function:
- Set the instance variables (description, first, and second) to the values passed as parameters.
Define the manipulate function:
- Check the value of the description member variable and perform calculations accordingly.
- Return the calculated value.
- Handle different shape cases: rectangle, circle, sphere, cylinder, and an unknown shape.
Define the print function:
- Print the shape's description.
- Print the length and width or radius, formatted with two decimal places.
- Print the area or volume calculated using the manipulate function, also formatted with two decimal places.
In the main function:
- Create instances of the temporary class representing different shapes: rectangle, circle, sphere, cylinder, and an unknown shape.
- Set their parameters using the constructor or the set function.
- Call the print function on each instance to display the shape details and calculated area/volume.
Return 0:
- Exit the program with a return status of 0.

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