#include <stdio.h>
#include <string.h>


int main() {
  char a[] = "/segment1";
  char b[] = "/";

  char *s1 = a;
  char *s2 = b;

  while (*s1 && *s2 && (*++s1 == *++s2));
  printf ("%d %d %d %d\n", *s1, *s2, s1-a, s2-b);
	if (!((*s1 == 0 || *s1 == 47) && (*s2 == 0 || *s2 == 47))) { // unless both are at end of segment
		while(*s1-- != 47 && s1 > 0);
	}
  *s1 = 0;
  printf ("%d %d %d %d\n", *s1, *s2, s1-a, s2-b);
  printf ("align: %s\n", a);
}

// ausgabe:
115 0 1 1
-65 0 -176 1
align: /segment1