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getcwd

Syntax

 
#include <unistd.h>

char *getcwd(char *buffer, int max);

Description

Get the current directory. The return value includes the drive specifier.

If buffer is NULL, getcwd allocates a buffer of size max with malloc. This is an extension of the POSIX standard, which is compatible with the behaviour of glibc (the C library used on Linux).

This call fails if more than max characters are required to specify the current directory.

Return Value

The buffer, either buffer or a newly-allocated buffer, or NULL on error.

Portability

ANSI/ISO C No
POSIX 1003.2-1992; 1003.1-2001 (see note 1)

Notes:

  1. The behaviour when buffer is NULL is unspecified for POSIX.

Example

 
char *buf = (char *)malloc(PATH_MAX);
if (buf && getcwd(buf, PATH_MAX))
{
  printf("cwd is %s\n", buf);
  free(buf);
}


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