updates to bool, initializers and conformance topics

Author: Michael Blome

docs/cpp/bool-cpp.md

@@ -55,7 +55,10 @@ if (condexpr1) statement1;
 
  If `condexpr1` is **true**, `statement1` is always executed; if `condexpr1` is **false**, `statement1` is never executed.  
 
- When a postfix or prefix `++` operator is applied to a variable of type `bool`, the variable is set to **true**. The postfix or prefix `--` operator cannot be applied to a variable of this type.  
+ When a postfix or prefix `++` operator is applied to a variable of type `bool`, the variable is set to **true**. 
+**Visual Studio 2017 version 15.3 and later**: operator++ for bool was removed from the language and is no longer supported.
+
+The postfix or prefix `--` operator cannot be applied to a variable of this type.  
 
  The `bool` type participates in integral promotions. An r-value of type `bool` can be converted to an r-value of type `int`, with **false** becoming zero and **true** becoming one. As a distinct type, `bool` participates in overload resolution.  
 

docs/cpp/initializers.md

@@ -543,5 +543,5 @@ Decision Graph for Initialization of Reference Types
  References that are not qualified with either the **const** or `volatile` keyword can be initialized only with objects declared as neither **const** nor `volatile`.  
   
 ### Initialization of external variables  
- Declarations of automatic, register, static, and external variables can contain initializers. However, declarations of external variables can contain initializers only if the variables are not declared as `extern`.
+ Declarations of automatic, static, and external variables can contain initializers. However, declarations of external variables can contain initializers only if the variables are not declared as `extern`.
   

docs/visual-cpp-language-conformance.md

@@ -1,34 +1,34 @@
 ---
-title: "Visual C++ Language Conformance | Microsoft Docs"
-ms.custom: ""
-ms.date: "3/1/2017"
-ms.reviewer: ""
-ms.suite: ""
-ms.technology: 
-  - "cpp-language"
-ms.tgt_pltfrm: ""
-ms.topic: "article"
+title: "Visual C++ Language Conformance | Microsoft Docs"  
+ms.custom: ""  
+ms.date: "3/1/2017"  
+ms.reviewer: ""  
+ms.suite: ""  
+ms.technology:  
+  - "cpp-language"  
+ms.tgt_pltfrm: ""  
+ms.topic: "article"  
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-  - "C++"
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-author: "corob-msft"
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+  - "C++"  
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+caps.latest.revision: 11  
+author: "corob-msft"  
+ms.author: "corob"  
+manager: "ghogen"  
 translation.priority.ht: 
-  - "cs-cz"
-  - "de-de"
-  - "es-es"
-  - "fr-fr"
-  - "it-it"
-  - "ja-jp"
-  - "ko-kr"
-  - "pl-pl"
-  - "pt-br"
-  - "ru-ru"
-  - "tr-tr"
-  - "zh-cn"
-  - "zh-tw"
+  - "cs-cz"  
+  - "de-de"  
+  - "es-es"  
+  - "fr-fr"   
+  - "it-it"  
+  - "ja-jp"  
+  - "ko-kr"  
+  - "pl-pl"  
+  - "pt-br"  
+  - "ru-ru"  
+  - "tr-tr"  
+  - "zh-cn"  
+  - "zh-tw"  
 ---
 # Visual C++ Language Conformance 
 This topic summarizes the ISO C++03, C++11, C++14, and Draft C++17 language standards conformance of compiler features and Standard Library (STL) features for Visual C++ in Visual Studio 2017 and earlier versions. Each compiler and STL feature name links to the ISO C++ Standard proposal paper that describes the feature, if one is available at publication time. The Supported column lists the Visual Studio version in which support for the feature first appeared.