src/cal/cnt.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  cnt.c - simple counting program.
 *
 *      2/1/88
 */

#include  <stdio.h>


int  n[50];
char  buf[256];


main(argc, argv)
int  argc;
char  *argv[];
{
        int  a;

        argv++; argc--;
        for (a = 0; a < argc; a++)
                n[a] = atoi(argv[a]);
        n[a] = 0;
        loop(n, buf);

        exit(0);
}


char *
tack(b, i)
register char  *b;
register int  i;
{
        register char  *cp;
        char  *res;

        *b++ = '\t';
        cp = b;
        if (i == 0)
                *cp++ = '0';
        else
                do {
                        *cp++ = i%10 + '0';
                        i /= 10;
                } while (i);
        res = cp--;
#define c i
        while (cp > b) {                /* reverse string */
                c = *cp;
                *cp-- = *b;
                *b++ = c;
        }
#undef c
        return(res);
}


loop(n, b)
int  *n;
char  *b;
{
        int  i;

        if (n[0] == 0) {
                *b = '\0';
                puts(buf);
                return;
        }
        for (i = 0; i < n[0]; i++)
                loop(n+1, tack(b, i));
}
Revision:	1.1
Committed:	Sat Feb 22 02:07:20 2003 UTC (22 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id$";
3	#endif
4	/*
5	* cnt.c - simple counting program.
6	*
7	* 2/1/88
8	*/
9
10	#include <stdio.h>
11
12
13	int n[50];
14	char buf[256];
15
16
17	main(argc, argv)
18	int argc;
19	char *argv[];
20	{
21	int a;
22
23	argv++; argc--;
24	for (a = 0; a < argc; a++)
25	n[a] = atoi(argv[a]);
26	n[a] = 0;
27	loop(n, buf);
28
29	exit(0);
30	}
31
32
33	char *
34	tack(b, i)
35	register char *b;
36	register int i;
37	{
38	register char *cp;
39	char *res;
40
41	*b++ = '\t';
42	cp = b;
43	if (i == 0)
44	*cp++ = '0';
45	else
46	do {
47	*cp++ = i%10 + '0';
48	i /= 10;
49	} while (i);
50	res = cp--;
51	#define c i
52	while (cp > b) { /* reverse string */
53	c = *cp;
54	cp-- = b;
55	*b++ = c;
56	}
57	#undef c
58	return(res);
59	}
60
61
62	loop(n, b)
63	int *n;
64	char *b;
65	{
66	int i;
67
68	if (n[0] == 0) {
69	*b = '\0';
70	puts(buf);
71	return;
72	}
73	for (i = 0; i < n[0]; i++)
74	loop(n+1, tack(b, i));
75	}