Answer to Question #38562 in C# for AYDJAN NEVZAT
Create a class Student_info, which inherits class Person, in which member data for faculty number, group and faculty are added. The class contains a constructor, member functions for accessing the data, for change of ID and for displaying the data.
Add Class Student_marks, which inherits class Student_info and contains marks in 3 subjects, constructor, member function show () to display the marks and member function av() to calculate the average grade.
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