Variable masses (VLA) are... ?

[magpie]

I'm writing a program that sorts words in the line. The mission says:

The use of AC ranges (VLA) is prohibited.

If anything, I'll write to the SI.

I don't quite understand what VLA means. It's like malloc and stuff? Or something else?

Thank you very much.

[carriann]

It's when you write something like that.

int n;
scanf("%d",&n);
int a[n];

That is, a mass declared as a mass, but the size of which is determined during work rather than during the compilation.

C malloc - It's a little different, it's a dynamic remembrance for the mass:

int n;
scanf("%d",&n);
int *a = malloc(n*sizeof(int));