23.21 LAB: The_str_() method Write a_str_) instance method for the Number class, which returns a string representation of a Number object. The string should be in the format 'The value is yourNum', where yourNum is the value of the integer attribute from the Number class. Ex: If the input is: 723 then the output is: The value is 723

c++ A FastCritter moves twice as fast as a regular critter. When asked to move by n steps, it actually moves by 2 * n steps. Implement a FastCritter class derived from Critter whose move function behaves as described. Complete the following file: fastcritter_Tester.cpp #include <iostream>using namespace std; #include "critter.h" /**A FastCritter moves twice as fast as a regular critter.*/class FastCritter:public Critter{public:void move(int steps);}; . . . int main(){FastCritter speedy;speedy.move(10);cout << speedy.get_history() << endl;cout << "Expected: [move to 20]" << endl;speedy.move(-1);cout << speedy.get_history() << endl;cout << "Expected: [move to 20, move to 18]" << endl;return 0;}   Use the following file: critter.h #ifndef CRITTER_H #define CRITTER_H #include <string> #include <vector> using namespace std; /** A simulated critter. */ class Critter { public: /** Constructs a critter at position 0 with blank…

** in java language **

R7.30Assuming the following declarations, find the mistakes in the statements below. struct A { int m1[2]; int m2; } struct B { A a1; A* a2; int m3; } A a; B b[2]; a.b[0].a2 = a; b.b[1].m2 = 42; c.b[2].a2 = new A; d.b[0].a1.m1 = 42; e.b[1].a2->m2 = 42;

JAVA Program(*MUST WORK IN HYPERGRADE*)   Homework #1. Chapter 7. PC# 2. Payroll Class (page 488-489) Write a Payroll class that uses the following arrays as fields: * employeeId. An array of seven integers to hold employee identification numbers. The array should be initialized with the following numbers: 5658845 4520125 7895122 8777541 8451277 1302850 7580489 * hours. An array of seven integers to hold the number of hours worked by each employee * payRate. An array of seven doubles to hold each employee’s hourly pay rate * wages. An array of seven doubles to hold each employee’s gross wages The class should relate the data in each array through the subscripts. For example, the number in element 0 of the hours array should be the number of hours worked by the employee whose identification number is stored in element 0 of the employeeId array. That same employee’s pay rate should be stored in element 0 of the payRate array. The class should have a method that accepts an…

Java:

/*** This class describes a tweet. A tweet has a message in it, a unique ID,* a count of the number of likes, and a count of the number of times it* has been retweeted. In addition, the Tweet class will have a static * variable to count the total number of tweets to ever be created * (retweets don't count as a new tweet).* * You may NOT import any library class.* * **/public class Tweet { /*** This constructor creates a tweet with the given message.* Assume that the message is not null because only the tweet() method* from the TwitterUser class will call this constructor. There are* no length requirements on Tweets.* * The very first tweet to ever be created will have an ID of 0, the * next one will have 1, and so on and so forth. It may help you to use* the static count variable to set the ID. * * You will have to initialize other instance variables appropriately.* @param message the text of the tweet*/public Tweet(String message) {throw new UnsupportedOperationException("Implement…