Add language identifiers

Author: nxtn

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4336.md

@@ -44,7 +44,7 @@ library C4336bLib
 
 The following sample generates C4336:
 
-```
+```cpp
 // C4336.cpp
 // compile with: /W4 /LD
 // #import "C4336a.tlb"

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4337.md

@@ -52,7 +52,7 @@ library C4337bLib
 
 The following sample generates C4337:
 
-```
+```cpp
 // C4337.cpp
 // compile with: /W4 /LD
 #import "c4337b.tlb" auto_search   // C4337

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4339.md

@@ -15,7 +15,7 @@ This warning is off by default. See [Compiler Warnings That Are Off by Default](
 
 The following sample generates C4339 and shows how to fix it:
 
-```
+```cpp
 // C4339.cpp
 // compile with: /W4 /clr /c
 // C4339 expected

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4343.md

@@ -13,7 +13,7 @@ This warning, only valid in the Itanium Processor Family (IPF) compiler, reports
 
 The following sample generates C4343:
 
-```
+```cpp
 // C4343.cpp
 // compile with: /Og /W4 /LD
 // processor: IPF

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4365.md

@@ -17,7 +17,7 @@ C4365 is off by default.  For more information, see [Compiler Warnings That Are
 
 The following sample generates C4365.
 
-```
+```cpp
 // C4365.cpp
 // compile with: /W4
 #pragma warning(default:4365)

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4366.md

@@ -19,7 +19,7 @@ For more information, see __unaligned and [pack](../../preprocessor/pack.md).
 
 The following sample generates C4366.
 
-```
+```cpp
 // C4366.cpp
 // compile with: /W4 /c
 // processor: IPF x64

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4389.md

@@ -13,7 +13,7 @@ An operation involved signed and unsigned variables. This could result in a loss
 
 The following sample generates C4389:
 
-```
+```cpp
 // C4389.cpp
 // compile with: /W4
 #pragma warning(default: 4389)

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4400.md

@@ -15,7 +15,7 @@ The [const](../../cpp/const-cpp.md)and [volatile](../../cpp/volatile-cpp.md)qual
 
 The following sample generates C4400.
 
-```
+```cpp
 // C4400.cpp
 // compile with: /clr /W4
 // C4401 expected

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4408.md

@@ -13,7 +13,7 @@ An anonymous struct or union must have at least one data member.
 
 The following sample generates C4408:
 
-```
+```cpp
 // C4408.cpp
 // compile with: /W4 /LD
 static union

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4429.md

@@ -13,7 +13,7 @@ The compiler detected a character sequence that may be a badly formed universal
 
 The following sample generates C4429:
 
-```
+```cpp
 // C4429.cpp
 // compile with: /W4 /WX
 int \ug0e4 = 0;   // C4429

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4431.md

@@ -17,7 +17,7 @@ This warning is off by default. See [Compiler Warnings That Are Off by Default](
 
 The following sample generates C4431.
 
-```
+```c
 // C4431.c
 // compile with: /c /W4
 #pragma warning(default:4431)

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4434.md

@@ -15,7 +15,7 @@ C4434 indicates that the compiler changed the accessibility of a static construc
 
 The following sample generates C4434.
 
-```
+```cpp
 // C4434.cpp
 // compile with: /W4 /c /clr
 public ref struct R {

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4460.md

@@ -15,7 +15,7 @@ You passed a value by reference to a user-defined Windows Runtime or CLR operato
 
 The following sample generates C4460 and shows how to fix it.
 
-```
+```cpp
 // C4460.cpp
 // compile with: /W4 /clr
 #include <stdio.h>

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4481.md

@@ -19,7 +19,7 @@ A keyword was used that is not in the C++ standard, for example, one of the over
 
 The following sample generates C4481.
 
-```
+```cpp
 // C4481.cpp
 // compile with: /W4 /c
 class B {

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4487.md

@@ -17,7 +17,7 @@ For more information, see [new (new slot in vtable)](../../extensions/new-new-sl
 
 The following sample generates C4487.
 
-```
+```cpp
 // C4487.cpp
 // compile with: /W4 /clr
 using namespace System;

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4512.md

@@ -29,7 +29,7 @@ You can resolve the C4512 warning for your code in one of three ways:
 
 The following sample generates C4512.
 
-```
+```cpp
 // C4512.cpp
 // compile with: /EHsc /W4
 // processor: x86

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4514.md

@@ -15,7 +15,7 @@ This warning is off by default. See [Compiler Warnings That Are Off by Default](
 
 The following sample generates C4514:
 
-```
+```cpp
 // C4514.cpp
 // compile with: /W4
 #pragma warning(default : 4514)

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4515.md

@@ -13,7 +13,7 @@ A namespace is used recursively.
 
 The following sample generates C4515:
 
-```
+```cpp
 // C4515.cpp
 // compile with: /W4
 namespace A

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4516.md

@@ -13,7 +13,7 @@ The ANSI C++ committee has declared access declarations (changing the access of
 
 The following sample generates C4516:
 
-```
+```cpp
 // C4516.cpp
 // compile with: /W4
 class A

docs/error-messages/compiler-warnings/compiler-warning-level-4-c4564.md

@@ -13,7 +13,7 @@ The compiler detected a method with one or more parameters with default values.
 
 Given the following .dll created with Visual Basic, which allows default parameters on method arguments:
 
-```
+```vb
 ' C4564.vb
 ' compile with: vbc /t:library C4564.vb
 Public class TestClass
@@ -25,7 +25,7 @@ End class
 
 And the following C++ sample that uses the .dll created with Visual Basic,
 
-```
+```cpp
 // C4564.cpp
 // compile with: /clr /W4 /WX
 #using <C4564.dll>