Create a class “Student” with data members such as roll number, name and branch. Create another class “Exam” for storing marks of three subjects. Derive a new class “Result” from “Student” and “Exam” class with data members such as total and average. Display the values of all the data members. Develop a C++ program to model the above relationships. Include comments for the code. Also, can you include screenshots of the code and the output as well   Test cases   Private – Input   1000 ABC CSE 90 80 70   Output 240 80   Public – Input   2000 DEF IT 25 30 35   Output 90 30

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