Can you define the size of an array at runtime in C

Question

New to C, thanks a lot for help.

Is it possible to define an array in C without either specifying its size or initializing it.

For example, can I prompt a u

Answer 1

You can use malloc to allocate memory dynamically (i.e. the size is not known until runtime).

C is a low level language: you have to manually free up the memory after it's used; if you don't, your program will suffer from memory leaks.

UPDATE

Just read your comment on another answer.

You're asking for an array with a dynamically-changing-size.

Well, C has no language/syntactic facilities to do that; you either have to implement this yourself or use a library that has already implemented it.

See this question: Is there an auto-resizing array/dynamic array implementation for C that comes with glibc?