c passing several arguments to threads

Question

when i create a thread, i want to pass several arguments. So i define in a header file the following:

struct data{
  char *palabra;
  char *directorio;
  FI         


        

Answer 1

Do not use option #2. The data structure could be overwritten (explicitly, for instance using the same structure to start another thread, or implicitly, for instance having it overwritten on the stack). Use option #1.

To get at your data, at the start of your thread, do

struct data *info = (struct data*)arguments;

Then access info as normal. Make sure to free it when the thread is done (or, as I prefer, have the caller free it after joining with the thread).