Quiz Practice:
C. It returns the dimension of the specified array
Answer: (C) It returns the dimension of the specified array
In C++, std::rank is a type trait defined in the <type_traits> header. It determines the number of dimensions of an array type at compile time.
For example, int arr[3][4] is a two-dimensional array, so std::rank<decltype(arr)>::value gives 2.
Similarly, int arr[2][3][4] has three dimensions, so its rank is 3.
Therefore, rank() is related to the number of array dimensions, not the size or number of elements in each dimension.
