请问一下C语言里的access函数整么用？

追问：那请问它的值有哪几种情况？

答案：是，内容如下，希望采纳
 
please check it in MSDN

_access, _waccess
Determine file-access permission.

int _access( const char *path, int mode );

/* ACCESS.C: This example uses _access to check the
 * file named "ACCESS.C" to see if it exists and if
 * writing is allowed.
 */

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

void main( void )
{
   /* Check for existence */
   if( (_access( "ACCESS.C", 0 )) != -1 )
   {
      printf( "File ACCESS.C exists\n" );
      /* Check for write permission */
      if( (_access( "ACCESS.C", 2 )) != -1 )
         printf( "File ACCESS.C has write permission\n" );
   }
}


Output

File ACCESS.C exists
File ACCESS.C has write permission
没用过

上一个：帮我设计个C语言课程设计 谢谢
下一个：c语言一些学习的资料从那找？