Initializing array in a constructor

[weak inlet]

Hello. I'm currently trying to make a class where the size of an array is defined in it's constructor. I've recently been refreshing myself with cpp, and do not remember how you would do something like this given things being initialized on declaration. How would I declare this array in the header file?

[prime shadow]

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[dusk sparrow]

use operator new, or a vector

[prime shadow]

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