Struct Array Error

Question

https://code.sololearn.com/cC5fHLfx39Zs/?ref=app

It gives me an error about the "flexible array" in an "otherwise empty struct"
Why? What can I do to fix this? What's the easiest way to initialize an array through a constructor?

Answer 1

An additional
T* contents;
?

Answer 2

: contents(arg)
Does this work?

Answer 3

That worked because unlike in C, [arrays] need a size which is known at compile time. Otherwise, you can make them a pointer, or, even better: use the std::vector class. Google that up if you want to, they're better at explaining than me.

Answer 4

Perfect.

Answer 5

Timon Paßlick no

Answer 6

Timon Paßlick thanks!

Answer 7

Timon Paßlick I've heard of the vector