Header File 

direct.h  

Category 

Directory Control Routines 

Prototype 

char * _getdcwd(int drive, char *buffer, int buflen); 

wchar_t * _wgetdcwd(int drive, wchar_t *buffer, int buflen); 

Description 

Gets current directory for specified drive. 

_getdcwd gets the full path name of the working directory of the specified drive (including the drive name), up to buflen bytes long, and stores it in buffer. If the full path name length (including the null-terminator) is longer than buflen, an error occurs. The drive is 0 for the default drive, 1=A, 2=B, and so on. 

If the working directory is the root directory, the terminating character for the full path is a backslash. If the working directory is a subdirectory, there is no terminating backslash after the subdirectory name. 

If buffer is NULL, _getdcwd allocates a buffer at least buflen bytes long. You can later free the allocated buffer by passing the _getdcwd return value to the free function. 

Return Value 

If successful, _getdcwd returns a pointer to the buffer containing the current directory for the specified drive.  

Otherwise it returns NULL, and sets the global variable errno to one of the following values:

Example

#include <direct.h>
#include <stdio.h>
char buf[65];
void main()
{
  if (_getdcwd(3, buf, sizeof(buf)) == NULL)
    perror("Unable to get current directory of drive C");
  else
    printf("Current directory of drive C is %s\n",buf);
}

Portability