Question

ptr_one = (int *)malloc(sizeof(int));

what is (int *)?

Answer 1

What does (int *) supposed to do?

Answer 2

Casts it as an integer pointer.

Answer 3

malloc() returns a void (untyped) pointer. The pointer that malloc() returns has to be changed (cast) to the type you want to use the memory for.

Answer 4

int* is a pointer..in java they are called references