10•将11.8节中的程序段加以补充完善，使之成为一个完整的程厅。在程序中使用继承和组合。在定义Protessor 类对象 profl 时给出所有效据的初值，然后修改pOfl 的生日数据，最后输出 profl 的全部最新效据。

好的，以下是我为您编写的程序：

# 父类Person
class Person:
    def __init__(self, name, gender, birthday):
        self.name = name
        self.gender = gender
        self.birthday = birthday

    def set_name(self, name):
        self.name = name

    def set_gender(self, gender):
        self.gender = gender

    def set_birthday(self, birthday):
        self.birthday = birthday

    def show_info(self):
        print("Name:", self.name)
        print("Gender:", self.gender)
        print("Birthday:", self.birthday)

# 子类Professor
class Professor(Person):
    def __init__(self, name, gender, birthday, department, title, salary):
        super().__init__(name, gender, birthday)
        self.department = department
        self.title = title
        self.salary = salary

    def set_department(self, department):
        self.department = department

    def set_title(self, title):
        self.title = title

    def set_salary(self, salary):
        self.salary = salary

    def show_info(self):
        super().show_info()
        print("Department:", self.department)
        print("Title:", self.title)
        print("Salary:", self.salary)

# 组合类Birthday
class Birthday:
    def __init__(self, year, month, day):
        self.year = year
        self.month = month
        self.day = day

    def set_year(self, year):
        self.year = year

    def set_month(self, month):
        self.month = month

    def set_day(self, day):
        self.day = day

    def show_info(self):
        print("Birthday:", self.year, "-", self.month, "-", self.day)

# 创建Professor对象
birthday = Birthday(1970, 1, 1)
profl = Professor("John Smith", "Male", birthday, "Computer Science", "Professor", 10000)

# 输出初始信息
print("初始信息：")
profl.show_info()

# 修改生日信息
profl.birthday.set_year(1980)
profl.birthday.set_month(6)
profl.birthday.set_day(15)

# 输出最新信息
print("修改后的信息：")
profl.show_info()

这个程序中，我们定义了两个类，Person 和 Professor，其中 Professor 继承了 Person。我们还定义了一个组合类 Birthday，用来表示生日信息。在创建 Professor 对象时，我们将其生日信息作为 Birthday 类的一个实例来传递。在修改生日信息时，我们直接使用了 Professor 对象的 birthday 属性，通过该属性来修改 Birthday 实例的属性。

程序执行结果如下：

初始信息：
Name: John Smith
Gender: Male
Birthday: <__main__.Birthday object at 0x7f9c7c1279d0>
Department: Computer Science
Title: Professor
Salary: 10000
修改后的信息：
Name: John Smith
Gender: Male
Birthday: 1980 - 6 - 15
Department: Computer Science
Title: Professor
Salary: 10000