* simple c question
@ 2004-09-11 20:13 max
0 siblings, 0 replies; 3+ messages in thread
From: max @ 2004-09-11 20:13 UTC (permalink / raw)
To: gcc-help
hi!
i'm new to this list and i hope i'm not bothering you with this simple
stuff:
i'm having problems with strings.
i want to get a path without filename into a string.
and the code is this:
/////////////////////////////////////////////////
// string.h included of course...
char * GetPath (char * string)
{
char * path;
int i, pos=-1;
for(i=0;string[i]!=0;i++)
{
if(string[i]=='/')
pos=i;
}
if(pos==-1)
return NULL;
strncpy(path, string, pos+1);
return path;
}
////////////////////////////////////////////
i don't get it to work.
can someone please help me?
thank you!
--
-----------------------------------------------
----------------maximilian marcoll-------------
-----------composition | performance-----------
http://icem-www.folkwang-hochschule.de/~marcoll
-----------------------------------------------
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: simple c question
@ 2004-09-11 21:41 Reuti
2004-09-12 10:39 ` max
0 siblings, 1 reply; 3+ messages in thread
From: Reuti @ 2004-09-11 21:41 UTC (permalink / raw)
To: m.marcoll; +Cc: gcc-help
Hi there,
>/////////////////////////////////////////////////
>
>// string.h included of course...
>
>char * GetPath (char * string)
>{
> char * path;
> int i, pos=-1;
>
> for(i=0;string[i]!=0;i++)
> {
> if(string[i]=='/')
> pos=i;
> }
>
> if(pos==-1)
> return NULL;
>
> strncpy(path, string, pos+1);
>
>return path;
>}
>
>////////////////////////////////////////////
you are not allocating any memory for *path (it's just a pointer), where the
strncpy could copy anythinkg to.
void GetPath (char* string, char* result)
{
char *path;
strcpy(result, string);
path=strrchr(result, '/');
if (path==NULL)
result[0]=0;
else
*(path+1)=0;
}
Greetings - Reuti
PS: Once upon the time a lived at the UmstraÃe...
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