Add "Remarks" and "Example" headings for error references in range [C1001, C1020]

Author: Rageking8

docs/error-messages/compiler-errors-1/fatal-error-c1001.md

@@ -10,6 +10,8 @@ ms.assetid: 5736cdb3-22c8-4fad-aa85-d5e0d2b232f4
 
 > INTERNAL COMPILER ERROR(compiler file *file*, line *number*)
 
+## Remarks
+
 The compiler cannot generate correct code for a construct, often due to the combination of a particular expression and an optimization option, or an issue in parsing. If the compiler file listed has a utc or C2 path segment, it is probably an optimization error. If the file has a cxxfe or c1xx path segment, or is msc1.cpp, it is probably a parser error. If the file named is cl.exe, there is no other information available.
 
 You can often fix an optimization problem by removing one or more optimization options. To determine which option is at fault, remove options one at a time and recompile until the error message goes away. The options most commonly responsible are [/Og (Global optimizations)](../../build/reference/og-global-optimizations.md) and [/Oi (Generate Intrinsic Functions)](../../build/reference/oi-generate-intrinsic-functions.md). Once you determine which optimization option is responsible, you can disable it around the function where the error occurs by using the [optimize](../../preprocessor/optimize.md) pragma, and continue to use the option for the rest of the module. For more information about optimization options, see [Optimization best practices](../../build/optimization-best-practices.md).

docs/error-messages/compiler-errors-1/fatal-error-c1002.md

@@ -10,6 +10,8 @@ ms.assetid: bd6d274a-c7b4-43af-8bf2-23c5e442aa22
 
 > compiler is out of heap space in pass 2
 
+## Remarks
+
 The compiler ran out of dynamic memory space during its second pass, probably due to a program with too many symbols or complex expressions.
 
 ### To fix by using the following possible solutions

docs/error-messages/compiler-errors-1/fatal-error-c1003.md

@@ -10,4 +10,6 @@ ms.assetid: 27d2d009-2e0f-41fb-8bfc-372752fbe920
 
 > error count exceeds number; stopping compilation
 
+## Remarks
+
 Errors in the program are too numerous to allow recovery. The compiler must terminate.

docs/error-messages/compiler-errors-1/fatal-error-c1004.md

@@ -10,6 +10,8 @@ ms.assetid: dbe034b0-6eb0-41b4-a50c-2fccf9e78ad4
 
 > unexpected end of file found
 
+## Remarks
+
 The compiler reached the end of a source file without resolving a construct. The code may be missing one of the following elements:
 
 - A closing brace
@@ -28,6 +30,8 @@ To resolve this error, check for the following:
 
 - A source file does not end with a carriage return and line feed.
 
+## Example
+
 The following sample generates C1004:
 
 ```cpp

docs/error-messages/compiler-errors-1/fatal-error-c1005.md

@@ -10,6 +10,8 @@ ms.assetid: 150daf8e-a38a-4669-9c1a-a05b5a1f65ef
 
 > string too big for buffer
 
+## Remarks
+
 A string in a compiler intermediate file overflowed a buffer.
 
 You could get this error when the parameter that you pass to either the [/Fd](../../build/reference/fd-program-database-file-name.md) or [/Yl](../../build/reference/yl-inject-pch-reference-for-debug-library.md) compiler options is greater than 256 bytes.

docs/error-messages/compiler-errors-1/fatal-error-c1007.md

@@ -10,4 +10,6 @@ ms.assetid: 224f7e2c-4522-4e09-b455-8d293bdb799d
 
 > unrecognized flag string in option
 
+## Remarks
+
 The command-line option contains an invalid string. Check the **CL** command line and environment variable for errors.

docs/error-messages/compiler-errors-1/fatal-error-c1008.md

@@ -10,4 +10,6 @@ ms.assetid: 7de729e3-b2ca-4a68-95ab-8a1c920f3f2c
 
 > no input file specified
 
+## Remarks
+
 The compiler was not given a C or C++ source file to compile. Check the **CL** command line and environment variable for filename specifications.

docs/error-messages/compiler-errors-1/fatal-error-c1009.md

@@ -10,4 +10,6 @@ ms.assetid: dcc8383c-3362-4c47-9c26-25d2451ebd53
 
 > compiler limit : macros nested too deeply
 
+## Remarks
+
 The compiler tried to expand too many macros at the same time. The compiler has a limit of 256 levels of nested macros. Split nested macros into simpler macros.

docs/error-messages/compiler-errors-1/fatal-error-c1012.md

@@ -9,8 +9,12 @@ helpviewer_keywords: ["C1012"]
 
 > unmatched parenthesis: missing 'character'
 
+## Remarks
+
 The parentheses in a preprocessor directive do not match.
 
+## Example
+
 The following sample generates C1012:
 
 ```cpp

docs/error-messages/compiler-errors-1/fatal-error-c1013.md

@@ -10,6 +10,8 @@ ms.assetid: 5514a679-efe7-4055-bdd3-5693ca0c332f
 
 > compiler limit : too many open parentheses
 
+## Remarks
+
 An expression contains too many levels of parentheses in a single expression. Simplify the expression or break it into multiple statements.
 
 Prior to Visual C++ 6.0 Service Pack 3, the limit on nested parenthesis in a single expression was 59. Currently, the limit on nested parenthesis is 256.