2.9BSD - /usr/src/lib/c/gen/strlen.c

   1: /*	@(#)strlen.c	2.1	SCCS id keyword	*/
   2: /*
   3:  * Returns the number of
   4:  * non-NULL bytes in string argument.
   5:  */
   6: 
   7: strlen(s)
   8: register char *s;
   9: {
  10:     register n;
  11: 
  12:     n = 0;
  13:     while (*s++)
  14:         n++;
  15:     return(n);
  16: }

Defined functions