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- Readme.md: Stars(C++) This lab exercise will practice creating objects with constructors and destructors and demonstrate when constructors and destructors are called. Star Class Create a class, Star. A Star object has two member variables: its name, and a solar radius. This class should have a constructor which takes a std::string, the name of the star, and a double, the solar radius of the star. In the constructor, the Star class should print to the terminal that the star was born. For example, if you create a Star as follows: Star my_star("Saiph", 22.2); Then the constructor should print: The star Saiph was born. In the destructor, the Star class should print to the terminal that the star was destroyed, along with the number of times the volume of the sun that that star was, formatted to two decimal places. Hint: use the following line to set the precision to 2 decimal places: std::cout << std::fixed << std::setprecision(2); For example, when my_star above has its…Bank Accounts (Use Python) Write a program that accepts bank transactions and prints out the balance of an account afterwards. PROGRAM DESIGN Create a class named bankAccount. A bank account should have the following attributes: accNumber, balance, and dateOpened. This class should also have the option to do the following transactions: deposit, withdraw and drop. Initially there is only one bankAccount active in the program, with a balance amount of 1515, and was opened back in 10/01/1987. Depositing adds to a current bankAccount’s balance, while withdrawing – does otherwise. Dropping would equate the current balance to zero. Refer to the following class diagram for more details about the current bankAccount: bankAccountaccNumber = 1balance = 1515dateOpened = "10/27/1987" deposit(dep)withdraw(wd)drop(accNumber) INPUTThe input would be a string that contains the following data: the transaction to be done (dep – for deposit, wd – for withdraw and drop – for drop), the accNumber, and…2-Define a class named Wall . The class should have two private double variables,one to store the length of the Wall and another to store the height . Write Input andoutput function .Add accessor and mutator functions to read and set both variables.Add another function that returns the area of the Wall as double Write programthat tests all your functions for at least three different Wall objects.
- 7) ( )If we define variables: int a=2, b-4, c=6; the value of the following expression ((a> b? a: b) > c)? (a> b? a: b): c; is: A) 2 B) 8 C) 4 D) 6You cannot use the isinstance function to determine whether an object is an instance of a subclass of a class.(T/F)C# (Odd or Even) Write an app that reads an integer, then determines and displays whether it’s odd or even. (Hints: use the remainder operator) (Multiples) Write an app that reads two integers, determines whether the first is a multiple of the second, and displays the result. (Hints: use the remainder operator). Create a class called Date that includes three pieces of information as auto-implemented properties: a month (type int), a day (type int), and a year (type int). Your class should have a constructor that initializes the three fields. Provide a method DisplayDate() that displays the three fields (separated by '/'). Write a test app named DateDemo that demonstrates class Date’s capabilities.
- C++ Project ( Build the requested system 100% into a C++ environment, excluding Class framework & All defined variables must be represented as pointer type, int, char etc)Scenario:A bookshop (PRIMER BOOKSHOP) wants to maintain the inventory of books that are being sold at the shop. The list includes details such as author, title, price, publisher, and stock position. Whenever a customer wants a book, the sales personnel inputs the title and author, and the system searches the list and displays whether it is available or not.- If it is not, an appropriate message is displayed.- If it is, then the system displays the book details and requests for the number of copies required.- If it is requested, copies of the book details and requests for the number of copies required are available, the total cost of the requested copies is displayed and your system needs to update the database.- Sales personnel, from time to time are allowed to update the latest stock and price to the created…A) numbers.fil B) numbers.count (3) D) len 4) the output of the following code is print (1 + 4/2-1 2/2) A) B) C) 6.0 D) 1.0 0.0 7.0 Which one of the following statements is FALSE regarding object? C) E) None of them Object is a particular instance of a class Ohjort hides the implementation detailsQ3) Many languages internally treat strings as character arrays, but somehow conceal this fact from the programmer. Character arrays or strings are used by programming languages to manipulate text such as words and sentences. Explain this statement with the help of a program. Needed code in C++
- How many data members can a class contain? a) 27 b) 255 c) 1024 d) As many as requiredMemory Allocation: Select all of the following statements that are true. The basic idea of contiguous allocation is that each process is contained in a single contiguous section of memory. When using a single-partition allocation scheme, the main memory is usually divided into three partitions. Memory partitioning schemes allow for multiprogramming. When applying the multiple-partition allocation scheme "Fixed Partitions", all partitions always have the same size. When applying the multiple-partition allocation scheme "Variable Partitions", the FirstFit allocation strategy performs best in practice. The Buddy system is prone to internal fragmentation.# Coding - Simulate a robot Write a program that simulates the movements of a robot. The robot can have three possible movements: turn right turn left advance The robot is placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of `{x,y}` coordinates,e.g., `{3,8}`, with coordinates increasing to the north and east. Create a Class `Robot` that contains a method `execute` which given a number of instructions will calculate the robot's new position, and the the direction in which it is pointing. ## Example The letter-string "RAALAL" means: Turn right Advance twice Turn left Advance once Turn left yet again Say a robot starts at `{7, 3}` facing north. Running this stream of instructions should leave it at `{9, 4}` facing west. ## Inputs and Outputs The argument of the `execute` is `string` in the format `X Y BEARING COMMANDS`. The method should return a one-liner `string` in the format `X Y BEARING`. In the…