Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning (level 3) C4240
Collapse the table of content
Expand the table of content

Compiler Warning (level 3) C4240

Error Message

nonstandard extension used : access to 'classname' now defined to be 'access specifier', previously it was defined to be 'access specifier'

Under ANSI compatibility (/Za), you cannot change the access to a nested class. Under the default Microsoft extensions (/Ze), you can, with this warning.


// C4240.cpp
// compile with: /W3
class X
   class N;
   class N
   {   // C4240

int main()

Community Additions

© 2015 Microsoft