C++ compile time error: expected identifier before numeric constant

Question

I have read other similar posts but I just don\'t understand what I\'ve done wrong. I think my declaration of the vectors is correct. I even tried to declare without size bu

Answer 1

Initializations with (...) in the class body is not allowed. Use {..} or = .... Unfortunately since the respective constructor is explicit and vector has an initializer list constructor, you need a functional cast to call the wanted constructor

vector name = decltype(name)(5);
vector val = decltype(val)(5,0);

As an alternative you can use constructor initializer lists

 Attribute():name(5), val(5, 0) {}