Create a class Rational for performing arithmetic with fractions. Write a driver program to test the class. Provide a constructor that enables an object of this class to be initialized when it is instantiated. The constructor should contain default values in case no initializes are provided and should store the fraction in reduced form. Provide a private function to reduce numbers. Provide Public member functions for each of the following arithmatic’s functions (addition – subtraction – multiplication – division), printing in the form a/b, printing in floating point format and final overload the == and != operators to allow comparisons of two fraction numbers. Include any additional operations that you think would be useful for a rational number class. Design, implement, and test your class.

c++ exercise: 1- 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

H.W: (Complex Class) Create a class called Complex for performing arithmetic with complex numbers. Write a program to test your class.Complex numbers have the form: realPart + imaginaryPart * i where i is: v-1. Use double variables to represent the private data of the class. Provide a constructor that enables an object of this class to be initialized when it is declared. The constructor should contain default values in case no initializers are provided. The class has a destructor to display a message when an object of this class is deleted. Provide public member functions that perform the following tasks: Adding two Complex numbers: The real parts are added together and the imaginary parts are added together. Subtracting two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is subtracted from the imaginary part of the left operand. Printing Complex numbers in the form (a, b), where a is…

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1) Through BlueJ, the class must define a method called isSpace that allows the book club staff to determine whether there is enough capacity for a group to attend. This method must take a single integer parameter representing the size of the group, and return a boolean result. The method must work as follows: If the value of the parameter is less-than or equal-to 0 then the method must return false. This case has priority over those following. If the value of the parameter is less-than or equal-to the space left in the book club (use the capacity and occupancy values in the to work this out) then the method must return true. Otherwise (i.e., if there is not space in the book club for the whole group) then the method must return false.  2) This method must not change the state of the BookClub object. In other words, both the current number of occupants and the capacity of the club must be exactly the same after it is called as it was before (Note that the return type of this method…

(2) Your member functions will be: Make sure that the mutators for height and width only take positive numbers! Test your class with the driver program given below. //--- Test driver for class Rectangle #include using namespace std; setHeight (int h): mutator for height variable setWidth (int w): mutator for width variable setDimensions (int h, int w): sets both height and width getArea (): returns the area of the rectangle getPerimeter () returns the perimeter of the rectangle print (): prints a rectangle with your dimensions composed of asterisks (3) Create a default constructor that sets the default values of Rectangle class to 1. int main() { Rectangle rec rec2; recl.setHeight (10); recl.setWidth (20); Page rec2.setDimensions (5, 10); cout of 2 ZOOM +

1)Create a complete Java class that can be used to create a Computer object as described below:A Computer has a:- Manufacturer- Disk Size- Manufacturing Date- Number of coresa) Add all instance variables (data encapsulation is expected).b) The class must have getters and setters for all instance variables.c) The class must have two constructors: a no-arg constructor and a constructor thatreceives input parameters for each instance variable.d) Implement a toString() method for your class.     2)Write a Java program TestComputer, which creates three Computer objects with the informationbelow:a) - Manufacturer: Dell- Disk Size: 1189160321024 bytes- Manufacturing Date: April 1, 2020- Number of cores: 2b) - Manufacturer: Apple Inc- Disk Size: 269283712040 bytes- Manufacturing Date: March 31, 2020- Number of cores: 4c) Create your own Object. You can mimic your actual personal computer or use a no-argsconstructor.Print the three objects using toString() method to show all data fields

Object passing checklist1. Go over each member function and add the const keyword after their declaration ifthey do not modify any of the class' member variables.2. When accepting objects as parameters, prefer to pass them by reference. Add reference declarator (& before the identifier name of an object parameter.3. If the member function does not modify the parameter, make the parameter constantby using the const keyword. apply the Object Passing Checklist. Modify food.h and volunteer.h to useobject references. Add const and & keywords in the appropriate places of the code.

What is the main difference between a struct and a class?     (More than 1 answer can be chosen)

Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works.  Next add the following public methods to the Address class and test them from main as you go: Write getters and…