blob: fb71a585558ee2cd97741ab0d40616b2c350d6d5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#include <u.h>
#include <libc.h>
#include "roman.h"
void
usage(void)
{
fprint(2, "usage: %s [ -dr ] number\n", argv0);
exits("usage");
}
void
main(int argc, char *argv[])
{
int decimal;
char *roman, buf[512];
decimal = -1;
roman = nil;
ARGBEGIN{
case 'd':
roman = EARGF(usage());
break;
case 'r':
decimal = strtol(EARGF(usage()), nil, 10);
break;
}ARGEND;
if(argc != 0)
usage();
if(decimal >= 0){
if(dectoroman(decimal, buf, sizeof buf) < 0)
sysfatal("dectoroman: %r");
print("%s\n", buf);
}else if(roman != nil){
if((decimal = romantodec(roman)) < 0)
sysfatal("romantodec: %r");
print("%d\n", decimal);
}else
usage();
exits(nil);
}
|