Python

class Employee:
    def __init__(self, name, birthdate, gender, employee_id, id_number, basic_salary, allowance):
        self.name = name
        self.birthdate = birthdate
        self.gender = gender
        self.employee_id = employee_id
        self.id_number = id_number
        self.basic_salary = basic_salary
        self.allowance = allowance

    def calculate_salary(self):
        return self.basic_salary * 3 + self.allowance


def input_employees(employee_list, n):
    for i in range(n):
        name = input("Enter name of employee {}:".format(i+1))
        birthdate = input("Enter birthdate of employee {}:".format(i+1))
        gender = input("Enter gender of employee {}:".format(i+1))
        employee_id = input("Enter employee ID of employee {}:".format(i+1))
        id_number = input("Enter ID number of employee {}:".format(i+1))
        basic_salary = float(input("Enter basic salary of employee {}:".format(i+1)))
        allowance = float(input("Enter allowance of employee {}:".format(i+1)))
        employee_list.append(Employee(name, birthdate, gender, employee_id, id_number, basic_salary, allowance))


def output_employees(employee_list):
    for employee in employee_list:
        print("Name: ", employee.name)
        print("Birthdate: ", employee.birthdate)
        print("Gender: ", employee.gender)
        print("Employee ID: ", employee.employee_id)
        print("ID number: ", employee.id_number)
        print("Basic salary: ", employee.basic_salary)
        print("Allowance: ", employee.allowance)
        print("Salary: ", employee.calculate_salary())
        print("\n")


def compare_ages(employee_list, employee_id1, employee_id2):
    employee1 = None
    employee2 = None
    for employee in employee_list:
        if employee.employee_id == employee_id1:
            employee1 = employee
        if employee.employee_id == employee_id2:
            employee2 = employee
    if employee1 is None or employee2 is None:
        print("Invalid employee IDs")
        return

    if employee1.birthdate > employee2.birthdate:
        print("Employee 1 is older")
    elif employee1.birthdate < employee2.birthdate:
        print("Employee 2 is older")
    else:
        print("Both employees have the same age")


def sort_by_age(employee_list):
    employee_list.sort(key=lambda x: x.birthdate)


def search_employee(employee_list, employee_id):
    for employee in employee_list:
        if employee.employee_id == employee_id:
            print("Name: ", employee.name)