PC World Interactive 7/PC World Interactive 7.iso/program/cprog.EXE/CC_1.ZIP/ISALNUM.C

Text File | 1988-02-01 | 384b | 9 lines

/*
** isalnum -- true if argument is valid ASCII alphabetic or digit
*/
isalnum(c) char c; {
  if((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
      (c >= '0' && c <= '9')) return 1;
  else return 0;
  }