Ejemplo 2 de hilos en C

hilo.c

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <pthread.h>
typedef struct mamadas{
    int theadID;
    char somerandombytes[1024];
}SACA;
/*Otro ejemplo de hilos en C*/

void* f_hilo(void* params){
  SACA *parametros=(SACA *)params;
  //int *int_params=(int *)params;
  printf("\n valor %d, cadena %s", parametros->theadID, parametros->somerandombytes);
  //pthread_exit(NULL); Se elimina debido a: 
  /* If the
     start_routine returns, the effect is as if there was an implicit call to pthread_exit() using
     the return value of start_routine as the exit status.*/
  return NULL;
}

int main(int argc, char **argv){
  pthread_t *hilo;
  int i, N=0;
  SACA *j;
  N = atoi(argv[1]);
  hilo = (pthread_t *)malloc(N*sizeof(hilo));
  j = (SACA *)malloc(sizeof(j)*N);
  for(i=0;i<N;i++){
    j[i].theadID=i;
    strcpy(j[i].somerandombytes, "HOLA");  
    pthread_create(&hilo[i], NULL, f_hilo, (void *) &j[i]);
    //pthread_create(pthread_t *thread, const pthread_attr_t *attr,
             //void *(*start_routine)(void *), void *arg)
  }  
  for(i=0;i<N;i++){
    pthread_join(hilo[i], NULL);
  }
  return 0;
}