Add "Remarks" and "Example" headings for error references in range [C2021, C2040]

Author: Rageking8

docs/error-messages/compiler-errors-1/compiler-error-c2021.md

@@ -10,9 +10,11 @@ ms.assetid: 064f32e2-3794-48d5-9767-991003dcb36a
 
 > expected exponent value, not 'character'
 
+## Remarks
+
 The character used as the exponent of a floating-point constant is not a valid number. Be sure to use an exponent that is in range.
 
-## Examples
+## Example
 
 The following sample generates C2021:
 

docs/error-messages/compiler-errors-1/compiler-error-c2022.md

@@ -10,4 +10,6 @@ ms.assetid: 1f5c477a-d909-42d8-8588-811586e8ba1e
 
 > 'number' : too big for character
 
+## Remarks
+
 The octal number following a backslash (\\) in a character or string constant is too big to represent a character.

docs/error-messages/compiler-errors-1/compiler-error-c2023.md

@@ -9,10 +9,14 @@ helpviewer_keywords: ["C2023"]
 
 > '*identifier*': Alignment (*value-1*) different from prior declaration (*value-2*)
 
+## Remarks
+
 The compiler found an alignment specifier for a class type that's different from a previous declaration, or an **`enum`** alignment specifier that's different from the natural alignment of the base type.
 
 To resolve this error, make sure all declarations and definitions of the type use the same alignment value.
 
+## Example
+
 The following sample generates C2023:
 
 ```cpp

docs/error-messages/compiler-errors-1/compiler-error-c2024.md

@@ -9,10 +9,14 @@ helpviewer_keywords: ["C2024"]
 
 > 'alignas' attribute applies to variables, data members and tag types only
 
+## Remarks
+
 The compiler found an **`alignas`** specifier applied to a function or other type that can't be aligned.
 
 To resolve this error, remove the **`alignas`** specifier.
 
+## Example
+
 The following sample generates C2024:
 
 ```cpp

docs/error-messages/compiler-errors-1/compiler-error-c2025.md

@@ -9,6 +9,8 @@ helpviewer_keywords: ["C2025"]
 
 > invalid or corrupted binary module interface file: '*filename*'
 
+## Remarks
+
 The compiler could not read the specified IFC file.
 
 To resolve this error, rebuild the module interface file.

docs/error-messages/compiler-errors-1/compiler-error-c2026.md

@@ -10,10 +10,10 @@ ms.assetid: 8e64b6e1-b967-479b-be97-d12dc4a8e389
 
 > string too big, trailing characters truncated
 
-The string was longer than the limit of 16380 single-byte characters.
-
 ## Remarks
 
+The string was longer than the limit of 16380 single-byte characters.
+
 Before adjacent strings get concatenated, a string can't be longer than 16380 single-byte characters.
 
 A Unicode string of about one half this length would also generate this error.

docs/error-messages/compiler-errors-1/compiler-error-c2027.md

@@ -10,6 +10,8 @@ ms.assetid: a39150c0-ec04-45ec-934c-a838bfe76627
 
 > use of undefined type 'type'
 
+## Remarks
+
 A type cannot be used until it is defined. To resolve the error, be sure the type is fully defined before referencing it.
 
 ## Examples

docs/error-messages/compiler-errors-1/compiler-error-c2028.md

@@ -10,4 +10,6 @@ ms.assetid: 4e92e944-8fce-4443-9baf-4411ad9bde70
 
 > struct/union member must be inside a struct/union
 
+## Remarks
+
 Structure or union members must be declared within the structure or union.

docs/error-messages/compiler-errors-1/compiler-error-c2030.md

@@ -10,6 +10,8 @@ ms.assetid: 5806cead-64df-4eff-92de-52c9a3f5ee62
 
 > a destructor with 'protected private' accessibility cannot be a member of a class declared 'sealed'
 
+## Remarks
+
 A Windows Runtime class declared as **`sealed`** cannot have a protected private destructor. Only public virtual and private non-virtual destructors are allowed on sealed types. For more information, see [Ref classes and structs](../../cppcx/ref-classes-and-structs-c-cx.md).
 
 To fix this error, change the accessibility of the destructor.

docs/error-messages/compiler-errors-1/compiler-error-c2031.md

@@ -10,6 +10,8 @@ helpviewer_keywords: ["C2031"]
 > a virtual destructor with '*accessibility*' accessibility is not allowed for this type\
 > a virtual destructor must have 'public' accessibility
 
+## Remarks
+
 A virtual Windows Runtime class has an access specifier or **`sealed`** specifier that's not allowed for a virtual destructor. For more information, see [Ref classes and structs](../../cppcx/ref-classes-and-structs-c-cx.md).
 
 To fix this error, change the accessibility of the destructor.