C++ Interview Questions and Answers | C++ Interview Sample Questions

  • How do you decide which integer type to use?
  • What should the 64-bit integer type on new, 64-bit machines be?
  • What’s the best way to declare and define global variables?
  • What does extern mean in a function declaration?
  • What’s the auto keyword good for?
  • I can’t seem to define a linked list node which contains a pointer to itself.
  • How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
  • How can I declare a function that returns a pointer to a function of its own type?
  • My compiler is complaining about an invalid redeclaration of a function, but I only define it once and call it once. What’s happening?
  • What can I safely assume about the initial values of variables which are not explicitly initialized?
  • Why can’t I initialize a local array with a string?
  • What is the difference between char a[] = “string”; and char *p = “string”; ?
  • How do I initialize a pointer to a function?

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