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; }; What are the members and functions in this example? I need help identifying how the members and functions work to answer the questions below. I am having troubles understanding this concept. I am learning constructors and deconstructors along with inline and hiding information. I feel lost trying to answer these questions. Can I get direction on how to proceed? Write the definition of the member function set so that the instance variables are set according to the parameters. Write the definition of the member function manipulate that returns a decimal number as follows: If the value of description is "rectangle", it returns first * second; if the value of description is "circle", it returns the area of the circle with radius first; if the value of description is "sphere", it returns the volume of the sphere with radius first; if the value of description is "cylinder", it returns the volume of the cylinder with radius first and height second; otherwise, it returns the value -1. Write the definition of the function print to print the values of the instance variables and the values returned by the function manipulate. For example, if description = "rectangle", first = 8.5, and second = 5, it should print: rectangle: length = 8.50, width = 5.00, area = 42.50

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;
};

What are the members and functions in this example? I need help identifying how the members and functions work to answer the questions below. I am having troubles understanding this concept. I am learning constructors and deconstructors along with inline and hiding information. I feel lost trying to answer these questions. Can I get direction on how to proceed?

Write the definition of the member function set so that the instance variables are set according to the parameters.

Write the definition of the member function manipulate that returns a decimal number as follows: If the value of description is "rectangle", it returns first * second; if the value of description is "circle", it returns the area of the circle with radius first; if the value of description is "sphere", it returns the volume of the sphere with radius first; if the value of description is "cylinder", it returns the volume of the cylinder with radius first and height second; otherwise, it returns the value -1.

Write the definition of the function print to print the values of the instance variables and the values returned by the function manipulate. For example, if description = "rectangle", first = 8.5, and second = 5, it should print: rectangle: length = 8.50, width = 5.00, area = 42.50

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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