An array's size declarator must be a with a value greater than

(note that examples are in C++)

Firstly, it must be a constant. Because you can't do something like this:

int x = 5;
int arr[x];

Because x's value could change over time, which is why you get a compile error. If x was a constant, indicated by keyword 'const', then this would compile, as x's value could never change.

Secondly, and obviously, the size of the array must be greater than 0, as you can't have an array with zero or negative number of elements.

When u ask a answer a question if two or more people answer it will say mark as brainliest hope this !

You can't change your age it stays the same as soon as you sign up