Which statement correctly describes C++ type traits such as std::rank?

Options

  • A. They provide information about types at compile time
  • B. They are used only for taking input from the user
  • C. They always allocate memory dynamically
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. They provide information about types at compile time

Detailed Explanation

Answer: (A) They provide information about types at compile time

C++ type traits are utilities that provide information about types and can also transform types. They are especially useful in template and generic programming.

For example, std::rank can determine the number of dimensions of an array type, while traits such as std::is_array can determine whether a type is an array.

These operations are primarily evaluated at compile time. They are not input/output functions and they do not automatically perform dynamic memory allocation.

← Previous Next →

Attempt Quiz Now:

TRE4 C and C++ Quiz practice set 2

Feature Posts