定义学生类，要求存储学号，姓名, 年龄，性别，班号等信息，并作为私有成员变量存储，分别实现readInfo (...), PrintInfo(...), findInfo(...) 三个公有成员函数，用于进行信息读取、信息打印、信息查找。要求readInfo (...)从键盘输入并设置学生信息，findInfo(...)从键盘输入学号进行学生对象的查找，PrintInfo(...)将学生信息打印出来-Defined class of students, requiring storage student number, name, age, gender, class, and other information, stored as private member variables, respectively, to achieve readInfo (...), PrintInfo (...), findInfo (...) c a public member functions for reading the information, the information printed, information search. Requirements readInfo (...) from the keyboard and set the student information, findInfo (...) student number from the keyboard for the students to find objects, PrintInfo (...) print out the student information