I feel stupid -- determine the full path to a file

[Shane Hathaway]

Dave Smith wrote:
> int main( int argc, char **argv )
> {
>     if( argc != 2 )
>     {
>         printf( "Usage: %s <path>\n", argv[0] );
>         return 1;
>     }
> 
>     char output[PATH_MAX];
>     realpath( argv[1], output );
>     printf( "%s\n", output );
> 
>     return 0;
> }

Didn't your mother teach you to check error codes?  Your hard drive
might spontaneously combust during the realpath() call, yet this program
will happily print garbage and say it was miraculously successful anyway.

Shane