Write a C++ program that save a list of 10 students ("number" (integer). "name"(string) and "grade" (float of range from 0 to 100)) in a file. The first line in the file contains the information of student's "number" 1. While the student's "number" in the second line is 2, and so on until the tenth "student". (10 marks) Then write a function getStudent(int num) that returns the "student" whose "number" is the input parameter "num". This function must retrieve the information of any "student" by his number using the seekg() function. The "student" objects are either structure or a class. (20 marks) [Total: 30 marks]