c - "expected ')' before numeric constant" when calling sem_init -

Assign an OS programming using straightforward and posx threads. Here is my code:

  #include & lt; Pthread.h & gt; # Include & lt; Semaphore.h & gt; Sem_t mutex, to_b, to_a; Int main () {// Start semaphores sem_init (and mutex, 0, 1); Sem_init (and to_b, 0, 0); Sem_init (and to_a 0, 0); }   
  gcc main.c -lpthread  I'm getting the compilation:  
  main.c: Main ': Main.c: 11: 24: error: expected') 'numeric constant before main.c: 11: 24: error: work on' sem_init '/usr/include/semaphore.h:37:12 Too few arguments: Note: Declared here   
 With any idea what can this be? I'm definitely saying sem_init.  
 
 
  
  sem_init (and to_a 0, 0);   
 should be  
  sem_init (and to_a, 0, 0);