[C语言] 获得 pwd 的几种函数

_getcwd()

GetCurrentDirectory

GetModuleFileName

main函数参数 argv[0]

// crt_getcwd.c
// This program places the name of the current directory in the
// buffer array, then displays the name of the current directory
// on the screen. Passing NULL as the buffer forces getcwd to allocate
// memory for the path, which allows the code to support file paths
// longer than _MAX_PATH, which are supported by NTFS.

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

int main( void )
{
   char* buffer;

   // Get the current working directory:
   if( (buffer = _getcwd( NULL,  )) == NULL )
      perror( "_getcwd error" );
   else
   {
      printf( "%s \nLength: %d\n", buffer, strnlen(buffer) );
      free(buffer);
   }
}