How do you check if a directory exists on Windows in C?

Do something like this:

BOOL DirectoryExists(LPCTSTR szPath){  DWORD dwAttrib = GetFileAttributes(szPath);  return (dwAttrib != INVALID_FILE_ATTRIBUTES &&          (dwAttrib & FILE_ATTRIBUTE_DIRECTORY));}

The GetFileAttributes() method is included in Kernel32.dll.

Here's a totally platform-agnostic solution (using the standard C library)

Edit: For this to compile in Linux, replace <io.h> with <unistd.h> and _access with access. For a real platform agnostic solution, use the Boost FileSystem library.

#include <io.h>     // For access().#include <sys/types.h>  // For stat().#include <sys/stat.h>   // For stat().bool DirectoryExists( const char* absolutePath ){    if( _access( absolutePath, 0 ) == 0 ){        struct stat status;        stat( absolutePath, &status );        return (status.st_mode & S_IFDIR) != 0;    }    return false;}

A Windows-specific implementation that supports both MBCS and UNICODE builds:

#include <io.h>#include <sys/types.h>#include <sys/stat.h>#include <tchar.h>BOOL directory_exists( LPCTSTR absolutePath ){  if( _taccess_s( absolutePath, 0 ) == 0 )  {    struct _stat status;    _tstat( absolutePath, &status );    return (status.st_mode & S_IFDIR) != 0;  }  return FALSE;}

If linking to the Shell Lightweight API (shlwapi.dll) is ok for you, you can use the PathIsDirectory function.