4.3BSD - /usr/src/games/hangman/getword.c

   1: # include   "hangman.h"
   2: 
   3: # if pdp11
   4: #	define    RN  (((off_t) rand() << 16) | (off_t) rand())
   5: # else
   6: #	define    RN  rand()
   7: # endif
   8: 
   9: /*
  10:  * getword:
  11:  *	Get a valid word out of the dictionary file
  12:  */
  13: getword()
  14: {
  15:     register FILE       *inf;
  16:     register char       *wp, *gp;
  17: 
  18:     inf = Dict;
  19:     for (;;) {
  20:         fseek(inf, abs(RN % Dict_size), 0);
  21:         if (fgets(Word, BUFSIZ, inf) == NULL)
  22:             continue;
  23:         if (fgets(Word, BUFSIZ, inf) == NULL)
  24:             continue;
  25:         Word[strlen(Word) - 1] = '\0';
  26:         if (strlen(Word) < MINLEN)
  27:             continue;
  28:         for (wp = Word; *wp; wp++)
  29:             if (!islower(*wp))
  30:                 goto cont;
  31:         break;
  32: cont:       ;
  33:     }
  34:     gp = Known;
  35:     wp = Word;
  36:     while (*wp) {
  37:         *gp++ = '-';
  38:         wp++;
  39:     }
  40:     *gp = '\0';
  41: }
  42: 
  43: /*
  44:  * abs:
  45:  *	Return the absolute value of an integer
  46:  */
  47: off_t
  48: abs(i)
  49: off_t   i;
  50: {
  51:     if (i < 0)
  52:         return -(off_t) i;
  53:     else
  54:         return (off_t) i;
  55: }

Defined functions

Defined macros