POSIX library is not being used

Hi all, I'm trying to change directory using

Code:

int chdir(char *directory);

However GCC gives me the error

Code:

$ gcc grabber.c -o grabber
grabber.c: In function ‘main’:
grabber.c:19: error: conflicting types for ‘chdir’
/usr/include/unistd.h:457: error: previous declaration of ‘chdir’ was here

I checked it out with splint and it complained i'm not using the POSIX library, and i basically installed gcc, libraries etc with the debian build-essential package. Here's the splint response

http://redruby.pastebin.com/m5f1468dd

Can anyone shed any light on this, as im confused and not sure what to do. Thanks

How about posting the code here?

Looks to me like you tried to prototype it again (and it complained), rather than try to call it.

Sure, here is the code:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int main ()
{

    FILE *log;
    char *directory;
    register int fir, sec, thi;
    fir = sec = 0;
    thi = 1;
    char url[59];
    log = fopen("log","w");
        
    if (!log)    {
            printf("log file can not be created; please specify different directory\n");
            scanf("%s", &directory);
            int chdir(char *directory);
            log = fopen("log","w");
        }
    
                
        while (thi <= 9)
            { 
                
                sprintf(url,"wget http://blackboardurl/lectures/%d%d%d.ppt",fir,sec, thi);
                system(url);
                thi++;
                
                if (thi == 10)
                    {    
                        thi = 0;
                        sec++;
                    
                    }    
                if (sec == 10)
                    {    
                        sec = 0;
                        fir++;
                    }    
            }


    return 0;

}

Hope this helps, thanks

Code:

int chdir(char *directory);

It is as Salem said. You are re-declaring the function. See here for a basic example of how to call the chdir function.

Also change this from

Code:

scanf("%s", &directory);

to

Code:

scanf("%s", directory);

> char *directory;
And then you need to allocate some space for your string as well.