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C/C++ Source or Header  |  1987-06-14  |  448 b   |  18 lines
  1. int strspn(string, set)
  2. register char *string;
  3. register char *set;
  4. /*
  5.  *    Return the length of the sub-string of <string> that consists
  6.  *    entirely of characters found in <set>.  The terminating '\0'
  7.  *    in <set> is not considered part of the match set.  If the first
  8.  *    character if <string> is not in <set>, 0 is returned.
  9.  */
  10. {
  11.     register int n = 0;
  12.     char *strchr();
  13.  
  14.     while(*string && strchr(set, *string++))
  15.         ++n;
  16.     return(n);
  17. }
  18.