Declare variable length array using the array container in C++

Question

是否可以使用在<array>标头中声明的数组容器声明可变长度数组，如果可以，如何在（VS）C ++中声明它？

Answer 1

std::array is a fixed-length array, and its length must be known at compile-time as it is a parameter of the template, and thus must be a constant value.

You want std::vector in the <vector> header. It is a variable-length array, its length is specified at run-time , and it can be resized dynamically.