#include <stdio.h>
#define N 5
#define N_plus_1 N+1
#define TAPPO '\0'

int lun_str (char *p);

int main ()
{
    int a[N], *pa, i;
    char s[N_plus_1], *ps, c;


  for (i=0; i<N; i++)
  	a[i] = i;
  for (i=0, c='a', ps=&c; i<N; i++)
  	s[i] = *ps+i;
  s[i] = TAPPO;
  	
  for (i=0;  i<N; i++)
  	printf("%4d", a[i]);
  printf("\n");
  for (i=0;  i<N; i++)
  	printf("%4c", s[i]);
  printf("\n");
  pa = a;
  ps = s;
  printf("indirizzo di pa: %p - pa+1: %p\n", pa, pa+1);
  printf("indirizzo di ps: %p - ps+1: %p\n", ps, ps+1);
  printf ("stringa %s lunga %4d\n", s, lun_str(s));
  printf("*(s+4): %c\n", *(s+4));
  printf("*(s+5): %c\n", *(s+5));
  printf("*(s+6): %c\n", *(s+6));
  printf("s+4: %p\n", s+4);
  printf("s+5: %p\n", s+5);
  printf("s+6: %p\n", s+6);
 }
 
int lun_str (char *p)
{
  int i=0; 
  while (*p++) i++;
  return i;
}