write a simple shell.
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write a simple shell. When the shell starts, the user can input from
the keyboard the path of an executable followed by several arguments. It is safe to assume that
the input supplied by the user is less than 1024 bytes. Your shell will then execute the
When the executed program completes, then the user can run other programs. If the user types
in “quit”, then the program terminates.
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- Using JavaFX, create a simple calculator application, like the following: The operators is ( + : " addition process" , -:subtraction process", *:"multiplication process" , /:"division process" , C : "Clear" , H: "History"); Validate that the first number and second is a numeric value if it is not throwing an exception. When clicking the operators (+, -, *, /): the result will display at the bottom, and stored in history. When clicking C, clear the first, second number and the history5 When clicking H, the history will display at the bottom.6 When the user click / and the second number is 0 throw an arithmetic exception. help_outlinefullscreenin java Integer cradleQuantity and string friendName are read from input. A FileOutputStream named fileStream is declared and the file named cradle.txt is opened. Then, a PrintWriter named cradleWriter is declared and associated with the file. Write the following to the opened file: "Remember:" "* * * *" cradleQuantity, followed by " cradles for " and friendName Another "* * * *" End each output with a newline. Finally, close the file. Ex: If the input is 12 Dax, then cradle.txt contains: Remember: * * * * 12 cradles for Dax * * * * Note: Data written to a file may be lost if the file is not closed. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 public class FileOutput { publicstaticvoidmain(String[] args) throwsIOException { Scannerscnr=newScanner(System.in); FileOutputStreamfileStream=null; PrintWritercradleWriter=null; intcradleQuantity; StringfriendName; cradleQuantity=scnr.nextInt(); friendName=scnr.next();…If fopen cannot open the file (filename mistyped, file does not exist in the current directory (folder), or we have no permission to open the file, etc) then a.We know that there is a problem because the next fprintf fails b.fopen issues a standard matlab error explaining the problem c.The file will always be created if it does not exist and fopen always opens a file. It is the responsibility of the programmer to make sure that the file is indeed what he intended d. fopen returns -1 and we know there is a problem and fix it
- Object Oriented ProgrammingWrite a program in Python that serves as a password checker. The string password that Python should check for is, "wahtZ9t%". The program must limit the user to 3 password attempts. A loop controlled by the range function must be used to execute up to 3 times. If the user entered password matches the target then the computer should output a success message that includes the number of tries it took to get it right. Then the loop must exit. Otherwise display a failure message, including attempts left and return to top of loop. If the user fails all 3 attempts output a message that the users password has been revoked. Process: • Declare and set values for variables needed throughout the code OA string containing the "target" password: "wahtZ9t%" o A limit for attempts at entering the password: 3 o A Boolean value to show if the user succeeded in entering the password (or not) • Create an iterative structure to execute up to 3 times: . o o Prompt the user for a password If the entered…This code is only for python. this is a game- transfer rings there are 3 problems which you are solving: A: failed transfer - make sure the progam dont take more than what the user inputed by raising an exceptionB: codE the trade_money function C: if sonic doesnt have as much as the user inputed, there will be an error pop up 'ERROR TRADE FAILED'. make it so the progam can run normally rather than turning it down. CODE: class user:def __init__(self, name, initial_money):self.name = nameself.money = initial_moneydef give_money(self, amount):self.money = self.money + amountdef take_money(self, amount):# Part A: Raise an exception as appropriateself.money = self.money - amountdef print_users(users):total_money = 0for user in users:print(f'{user.name:s} has {user.money:d} rings')total_money = total_money + user.moneyprint(f'There are a total of {total_money:d} rings')# B: code the trade_money functionsonic = user('sonic', 80)tails = user('tails', 20)print_users([sonic,…
- 9 from breezypythongui import EasyFrame 10 11 class TemperatureConverter(EasyFrame): 12 ""A termperature conversion program.""" II II II 13 def -_init__(self): "I"Sets up the window and widgets.""" EasyFrame._init_-(self, title = "Temperature Converter") 14 15 II IIII 16 17 18 # Label and field for Celsius self.addLabel(text = "Celsius", 19 20 row = 0, column = 0) 21 self.celsiusField = self.addFloatField(value = 0.0, 22 row = 1, column = Ø, 23 24 precision = 2) 25 # Label and field for Fahrenheit self.addLabel(text = "Fahrenheit", 26 27 28 row = 0, column = 1) 29 self.fahrField = self.addFloatField(value = 32.0, 30 row = 1, 31 column = 1, 32 precision = 2) 33 # Celsius to Fahrenheit button self.addButton(text = ">>>>", 34 35 row = 2, column = 0, command = self.computeFahr) 36 37 38 39 # Fahrenheit to Celsius button 40 self.addButton(text = "<«««", 41 row = 2, column = 1, 42 command = self.computeCelsius) 43 44 # The controller methods def computeFahr(self): "I"Inputs the Celsius…Imagine you are developing software for De Anza College that requires uses to enter their password. Software requires that the password be encrypted using the following criteria:1. All letters are converted to a number of your choice.2. All numbers are converted to an alphabet3. All punctuation characters are converted to 0.Write a class that takes a password input and meets the state criteria. Demonstrate the program that allows the user to enter a password and then display the encrypted message for testing purposes.Consider the statementScanner a = new Scanner(System.in); Here Scanner is the class name, a is the name of object, new keyword is used to allocate the memory and System.in is the input stream.Following methods of Scanner classare used in the program below :-1) nextInt to input an integer2) nextFloat to input a float3) nextLine to input a stringJava programming source code
- With no error Instructions The files provided in the code editor to the right contain syntax and/or logic errors. In each case, determine and fix the problem, remove all syntax and coding errors, and run the program to ensure it works properly. An example of the program is shown below: Enter a number >> 56 Enter a larger number >> 111 83.5 is halfway between 56 and 111 Task 1: The DebugSix4 class compiles without error. Task 2: The DebugSix4 program accepts user input and displays the correct output.Write a Python program stored in a file q1.py that calculates what day of the week a certain date will be in a given month. The user will first start by entering the first day of the month (i.e. Monday) and then enter a number from 1 to 30. In this problem, we assume that all months have 30 days. The program will output what day the number corresponds to. Users can enter days by the first three letters of the day, the whole name for the day, or the single letter abbreviation (U-Sunday, M-Monday, T-Tuesday, W-Wednesday, R-Thursday, F-Friday, S-Saturday). Example: Enter the first day of the month: M Enter a date: 19 The 19th is a Friday.It is a python program. Make sure it works and run in IDLE 3.10. Please show the code screenshot and output screenshot.
