freebsd-skq/games/ching/cno/ching.cno.c
jkh d8a265c292 Bring in the 4.4 Lite games directory, modulo man page changes and segregation
of the x11 based games.  I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way.  Bleah.
Submitted by:	jkh
1994-09-04 04:03:31 +00:00

121 lines
3.3 KiB
C

/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Guy Harris.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)ching.cno.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
/*
* cno - Read a question, cast a change, and output the line values to the
* standard output for processing by "phx".
*/
#include <stdio.h>
#include "ching.h"
long now; /* current time */
unsigned seed; /* seed for random number generator */
unsigned getrand();
char *change();
char string[6+1]; /* where the actual change string is put */
int table[2][2][2] = {
{ { OYIN, YYANG,}, { YYANG, YYIN,} },
{ { YYANG, YYIN,}, { YYIN, OYANG,} },
};
main()
{
FILE *logf;
time(&now);
seed = (int)now + getquest() + getgid() + getuid() + getpid(); /* randomize */
printf("%s\n", change());
}
/*
* Hash the question by adding all the characters together.
*/
int
getquest()
{
int result;
register int c;
result = 0;
while ((c = getchar()) != EOF)
result += c;
return(result);
}
/*
* Get a set of six lines making up a change.
*/
char *
change()
{
register int i;
for (i = 0; i < 6; i++)
string[i] = table[getrnum()&01][getrnum()&01][getrnum()&01] + '0';
string[i] = '\0';
return(string);
}
/*
* Get a number more random than what getrand() gives.
*/
getrnum()
{
return((getrand())>>(getrand()%17));
}
/*
* Get a random number.
*/
unsigned
getrand()
{
return(seed = (seed*13077) + 6925);
}