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

1) you need to use malloc and not define like below

struct data *info;
info = (struct data *)malloc(sizeof(struct data));

and pass the pointer of the structure in ptherad call as below

pthread_create ( &thread_id[i], NULL, &thread_fn, (void *)info );

2) you can access them in thread function as below

void thread_function ( void *arguments){

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

info->....

}