humpty
Group: Members
Posts: 655
Joined: Sep. 2005 |
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Posted: Jan. 13 2008,16:05 |
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yeh, wdef's code is somewhat similar to some c code i used before to generate strings;
just change MAX to 30 and the 'check' routine.
| Code Sample |
#include <stdio.h>
#define MAX 4
int check (char *s)
{
printf ("%s\n", s);
if (!strcmp (s, "help")) return (1);
return (0);
}
//--------------------------------------
char s[MAX+1];
int try_again (int pos)
{
char c;
s[pos+1]='\0';
for (c='a'; c<'z'+1; c++)
{
s[pos] = c;
if (check (s)) return(1); //success!
if (pos == MAX-1) continue;
if (try_again (pos+1)) return(1);
}
return (0);
}
//--------------------------------------
int main ()
{
if (try_again (0)) printf ("cracked :)\n");
else printf ("failed :(\n");
}
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the trick is to recurse, but to also use a global var so you don't blow the stack memory!
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