write some cpp functions:

```
Add marks record
Delete marks record
Edit marks record
Print current marks record in system

press E to exit
```

if the user entered 1, the run `functionAdd` so on and forth

```cpp
#include <iostream>

void print_menu() {
    std::cout << "Mark Record System\n";
    std::cout << "-----------------\n";
    std::cout << "1. Add marks record\n";
    std::cout << "2. Delete marks record\n";
    std::cout << "3. Edit marks record\n";
    std::cout << "4. Print current marks record in system\n";
    std::cout << "E. Exit\n";
    std::cout << "Enter your choice: ";
}
```

write a cpp function that print the above menu

The system can calculates the overall grade of each student.
User can add, edit and delete the record to the system manually or upload a file.
The system should have a counter to check how many records are update on each time.
User can generate report and the report should be able to download.

using cpp, write a console program that accepts user input name, maths marks, chinese marks, english marks and grade,
print them out when the user input done