Consider that a system has two entities, Employee and Department. The employee has the following properties: employee name, number, SSN and salary. Similarly, the department has the following properties: department name, department number and a set of employees who are working on that department.
Implement the above system taking into account the following requirements:
1. In department, the number of employees that are working on this department is decided at the time when instantiating the department.
2. Assume that emp1 and emp2 are two objects of type Employee, write a code that enables you to write: if (emp1.isequal (emp2)). Where emp1, emp2 are employee objects. The statement is true if the objects have the same salary.
3. In department, make sure no two employees have the same employee number.
4. In department, write a method to increase the salary of an employee by a specific value. it should validate that value.
5. Write a getEmpByEno method in class department that returns a pointer to one of the employees in that department using the Employee number.
6. Write a getEmpByName method in class department that returns a list of employees in that department who have the same name.
7. Write a method to find the maximum salary in the department.
8. Write a code that enables you to write: if (equal (dept1, dept2)). Where dept1 & dept2 are departments object. The statement is true if the two departments have the same sum of employee salaries.

Include header file iostream for input output on console.
Create class Employee
Declare all its data members.
Give definitions for parameterized constructor, empty constructor and copy constructor.
Getter methods should be defined for all data members.
Function isequal should be defined. It has return type bool. An Employee object is taken as an argument. The salaries of these teo objects are then compared. If both of the salaries are equal return true, otherwise return false.
A function display shows the data of all Employees in the Department.
Create class Department and declare all its data members.
Define the appropriate parameterised constructor which takes all the data member values as parameters.
Define function getEmpByNo of return type Employee pointer. A for loop will be used to traverse each Employee in the array. The pointer of the Employee will be returned.
Define function getEmpByName that gives an array of Employees with same Emplyee name. A string is passed as an argument. The array of Employee is traversed and each Employee's name is checked with the input string. If the name matches, the Employee is stored in a new array of Employees. The function returns the pointer to this new array.
Define function maxsal which finds the maximum salary from all employees.
Define function sumsal that calculates the sum of all salaries.
Define a function display that calls the display function of each Employee in the Employee array.
Define a function increasesal() which takes a double value as the parameter. The function then asks for the employee number whose salary has to be increased. Then that employee is found using a for loop and the salary of the employee is increased.
In the main program:
o Create an array of Employee objects and pass this to an object of Department.

o The functions display, maxsal and sumsal are called for this Department object.

o Call function increasesal() and then print the new values of the Employee whose salary has been increased.

o Create another array of Employee objects. Assign values to all objects using constructor.

o Create a Department object and pass the new Employee array to this object.

o Call function equal on first Department object and pass second Department object to it.

o Print the result.

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