5. Write an OOP C++ program to use variables within a local scope. 6. Write an OOP C++ program to use variables within a global scope. 7. Write an OOP C++ program to use variables within a global scope using the inheritance. 8. Write an OOP C++ program using Vectors to implement an iterator. 9. Write an OOP C++ program to demonstrate the use of sequential access to handle a file. 10. Write a C++ OOP program to demonstrate the use of random access to handle a file