compiler-error-c2870.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: Compiler Error C2870	Compiler Error C2870	11/04/2016	C2870	C2870	80523ee9-1fd3-4dc4-8a77-5083deb99066

Compiler Error C2870

'name' : a namespace definition must appear either at file scope or immediately within another namespace definition

You defined namespace name incorrectly. Namespaces must be defined at file scope (outside all blocks and classes) or immediately within another namespace.

The following sample generates C2870:

// C2870.cpp
// compile with: /c
int main() {
   namespace A { int i; };   // C2870
}