std::vector

What do you think std:array are?

I know, just a class version of the C-array but std::vectors has lower performance. I believe that std::array or C array are good enough for problems with non-dynamic input.

std::array is stack allocated array with known size compile time. std::vector is dynamically allocated array (on heap).

So C array equivalent = std::array, not std::vector.

The point of the parent was to write C++ code the C++ way. Most arrays in real programs should be std::vector.

Imitating C arrays with std::array is the perfect example of bastardized C/C++ code.

Using std::array is writing code C++ way. If you know size of the array compile time and you know it will fit the stack then there is no reason to use std::vector.