按下列要求编写程序。

（1）定义一个分数类Score。它有

3个数据成员：

Chinese //语文课成绩

English //英语课成绩

Mathematics //数学课成绩

2个构造函数：无参的和带参数的

3个成员函数：是否带参数根据需要自定

sum() //计算三门课总成绩

print() //输出三门课成绩和总成绩

modify() //修改三门课成绩

（2）定义一个人员people

（3）定义一个学生类Student。它有

3个数据成员：

Num //学号

Name //姓名

MyScore //成绩

2个构造函数：无参的和带参数的

3个成员函数：是否带参数根据需要自定

sum() //计算某学生三门课总成绩

print() //输出某学生学号、姓名和成绩

modify() //修改某学生学号、姓名和成绩

（3）在主函数中，先定义一个学生类对象数组，再通过for循环给对象数组赋上实际值，最后输出对象数组各个元素的值。

-According to the requirements of the following program.

(1) to define a Score Score. It has a

Three data members:

Chinese// language lesson

English// English class

Mathematics// math grades

Two constructors: no arguments and parameters

3 a member function: whether or not to bring a parameter set according to need

The sum ()// calculate the total grade three classes

Print ()// output three classes grades and grade

The modify ()// modify three classes

(2) define a staff people

(3) define a Student class Student. It has a

Three data members:

Num// student id

The Name// Name

MyScore// performance

Two constructors: no arguments and parameters

3 a member function: whether or not to bring a parameter set according to need

The sum ()// some students total grade three classes

Print ()// output a student student id, name, and grades

The modify ()// modify a student student id, name, and grades

(3) in the main function, define a student first class array of objects, and then