After c++17, The concept of structured binding is added
I'll give you some examples
if the array is defined,
std::array<int, 3> values = {11,22,33};you can declare x, y, z variables based on values array
auto [x, y, z] = values;It is neccesary for the left values(x, y, z) and the right values values is the same number
Another examples,
struct Point3d {double mx, my, mz; };
Point3d point;
point.mx = 1.0, point.my = 2.0, point.mz = 3.0;
auto [x, y, z] = point;