1 . What is C/C++ programming language, and what are its main features ? 2. What is the difference between C and C++ programming languages ? 3. What is the difference between a compiler and an interpreter ? 4. What are the basic data types available in C/C++ ? 5. What is a pointer in C/C++, and how is it used ? 6. What is the difference between a NULL pointer and a void pointer? 7. What is an array in C/C++, and how is it declared and initialized? 8. What is the difference between an array and a pointer in C/C++? 9. What are the basic control structures available in C/C++? 10. What is a function in C/C++, and how is it declared and defined? 11. What is the difference between call by value and call by reference in C/C++ functions? 12. What is recursion, and how is it used in C/C++? 13. What are the basic operators available in C/C++? 14. What is operator overloading, and how is it used in C++? 15. What is inheritance in C++, and how is it implemented? 16. What is polymorphism in C++, and how is it implemented? 17. What is encapsulation in C++, and how is it implemented? 18. What is a class in C++, and how is it declared and defined? 19. What is a constructor in C++, and how is it used? 20. What is a destructor in C++, and how is it used? 21. What is a friend function in C++, and how is it used? 22. What is a virtual function in C++, and how is it used? 23. What is a template in C++, and how is it used? 24. What is an exception in C++, and how is it used for error handling? 25. What is a namespace in C++, and how is it used? 26. What is a header file in C/C++, and how is it used? 27. What is a preprocessor directive in C/C++, and how is it used? 28. What is a macro in C/C++, and how is it defined and used? 29. What is the difference between a static variable and a global variable in C/C++? 30. What are some common debugging techniques used in C/C++ programming ?