What does this line (c++) mean?

Question

C++ / C#

void randl(float *mas, size_t n)
I understand that this is a void function, but what exactly is passed into it? And how I don't know

Answer 1

This is probably a function that takes a pointer to an array of floats and the size of the array.
(type size_t is an integer type, designed specifically for specifying the sizes of containers and arrays)

Answer 2

It is passed a pointer to a float and the second parameter is size_t.