C++
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  1. What should main() return in C and C++?

  2. Difference between undefined, unspecified, and implementation-defined behavior in C and C++?

  3. Why is it faster to process a sorted array than an unsorted array in C++?

  4. How do I use arrays in C++?

  5. What are the differences between a pointer variable and a reference variable in C++?

  6. What are copy elision and return value optimization?

  7. Why is not sizeof for a struct equal to the sum of sizeof of each member in C/C++?

  8. What is array decaying in C/C++?

  9. When can I use a forward declaration C/C++?

  10. What is a smart pointer and when should I use it in C++?

  11. Where can I find the current C or C++ standard documents?

  12. When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used in C++?

  13. Explain C++ Singleton design pattern.

  14. How to access a local variable from a different function using C++ pointers?

  15. How to compare float and double in C++?

  16. How do you set, clear, and toggle a bit in C/C++?

  17. How to read and parse CSV files in C++?

  18. Tokenize a string in C++?

  19. Difference between const int*, const int * const, and int const * in C/C++?

  20. When to use virtual destructors in C++?
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