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Annotation of 43BSDReno/games/hangman/getword.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)getword.c  5.3 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: # include      "hangman.h"
        !            25: 
        !            26: # if pdp11
        !            27: #      define  RN      (((off_t) rand() << 16) | (off_t) rand())
        !            28: # else
        !            29: #      define  RN      rand()
        !            30: # endif
        !            31: 
        !            32: /*
        !            33:  * getword:
        !            34:  *     Get a valid word out of the dictionary file
        !            35:  */
        !            36: getword()
        !            37: {
        !            38:        register FILE           *inf;
        !            39:        register char           *wp, *gp;
        !            40: 
        !            41:        inf = Dict;
        !            42:        for (;;) {
        !            43:                fseek(inf, abs(RN % Dict_size), 0);
        !            44:                if (fgets(Word, BUFSIZ, inf) == NULL)
        !            45:                        continue;
        !            46:                if (fgets(Word, BUFSIZ, inf) == NULL)
        !            47:                        continue;
        !            48:                Word[strlen(Word) - 1] = '\0';
        !            49:                if (strlen(Word) < MINLEN)
        !            50:                        continue;
        !            51:                for (wp = Word; *wp; wp++)
        !            52:                        if (!islower(*wp))
        !            53:                                goto cont;
        !            54:                break;
        !            55: cont:          ;
        !            56:        }
        !            57:        gp = Known;
        !            58:        wp = Word;
        !            59:        while (*wp) {
        !            60:                *gp++ = '-';
        !            61:                wp++;
        !            62:        }
        !            63:        *gp = '\0';
        !            64: }
        !            65: 
        !            66: /*
        !            67:  * abs:
        !            68:  *     Return the absolute value of an integer
        !            69:  */
        !            70: off_t
        !            71: abs(i)
        !            72: off_t  i;
        !            73: {
        !            74:        if (i < 0)
        !            75:                return -(off_t) i;
        !            76:        else
        !            77:                return (off_t) i;
        !            78: }

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