macarenaaaaaa

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>

int sem_id;

int main(int argc, char *argv[])
{

 if (argc != 2) {
        printf("Wrong number of parameters\n");
        exit(1);
    }

int N = atoi(argv[1]);
int i;
pthread_t th[1000];

for (i=0; i<N; i++)
  if (pthread_create(&th[i], NULL, (void* (*) (void*)) increment, (void*) i) != 0) {
    perror("Cannot create threads");
    exit(1);
  }

}