Add "Remarks" and "Example" headings for error references in range [C1021, C1050]

Author: Rageking8

docs/error-messages/compiler-errors-1/fatal-error-c1021.md

@@ -10,8 +10,12 @@ ms.assetid: e23171f4-ca6b-40c0-a913-a2edc6fa3766
 
 > invalid preprocessor command 'string'
 
+## Remarks
+
 `string` is not a valid [preprocessor directive](../../preprocessor/preprocessor-directives.md). To resolve the error, use a valid preprocessor name for `string`.
 
+## Example
+
 The following sample generates C1021:
 
 ```cpp

docs/error-messages/compiler-errors-1/fatal-error-c1022.md

@@ -10,8 +10,12 @@ ms.assetid: edada720-dc73-49bc-bd93-a7945a316312
 
 > expected #endif
 
+## Remarks
+
 An `#if`, `#ifdef`, or `#ifndef` directive has no matching `#endif` directive. Be sure each `#if`, `#ifdef`, or `#ifndef` has a matching `#endif`.
 
+## Example
+
 The following sample generates C1022:
 
 ```cpp

docs/error-messages/compiler-errors-1/fatal-error-c1023.md

@@ -10,6 +10,8 @@ ms.assetid: 727b4070-7474-420b-ab11-6530f96c794f
 
 > 'file' : unexpected error with pch, try rebuilding the pch
 
+## Remarks
+
 C1023 could be caused by one of several problems, the solution to which is a rebuild of the precompiled header file.
 
 C1023 may be caused if you attempt to use a precompiled header file on a machine other than the one on which it was built.

docs/error-messages/compiler-errors-1/fatal-error-c1025-c1115.md

@@ -9,4 +9,6 @@ helpviewer_keywords: ["C1025", "C1115"]
 
 > too many nested lambdas
 
+## Remarks
+
 The compiler detected more than an internal limit for nested lambdas in the same scope. The limit is 65,535 in recent versions of Visual Studio. To resolve this issue, reduce the number of nested lambdas in the current scope.

docs/error-messages/compiler-errors-1/fatal-error-c1026.md

@@ -10,6 +10,8 @@ ms.assetid: 89bb9d40-673a-44aa-a9f4-b42c07b49d44
 
 > parser stack overflow, program too complex
 
+## Remarks
+
 The space required to parse the program caused a compiler stack overflow.
 
 Decrease the complexity of expressions by:

docs/error-messages/compiler-errors-1/fatal-error-c1033.md

@@ -10,4 +10,6 @@ ms.assetid: 09976c03-8450-4cf7-8b43-1b91c2c2b9f9
 
 > cannot open program database pdb
 
+## Remarks
+
 This error can be caused by a disk error, a temporary lock created by an anti-virus program, a previous debugger instance that has not fully shut down, or parallel build mspdbsrv.exe processes that attempt to access the same file, among other possible causes.

docs/error-messages/compiler-errors-1/fatal-error-c1035.md

@@ -10,4 +10,6 @@ ms.assetid: 28cdccee-4377-4823-a4d8-89ca7229a83e
 
 > expression too complex; simplify expression
 
+## Remarks
+
 The compiler could not generate code for a complex expression. Split the expression into simpler expressions and recompile.

docs/error-messages/compiler-errors-1/fatal-error-c1037.md

@@ -10,6 +10,8 @@ ms.assetid: 79103bca-ccfb-42e7-aef9-9b90c15b162f
 
 > cannot open object file filename
 
+## Remarks
+
 The object file specified by [/Fo](../../build/reference/fo-object-file-name.md) cannot be opened.
 
 ### To fix by checking the following possible causes

docs/error-messages/compiler-errors-1/fatal-error-c1038.md

@@ -10,6 +10,8 @@ ms.assetid: 560dccb8-5b45-46f0-9412-caa4a6172aef
 
 > compiler limit : function : control flow state too complex; simplify function
 
+## Remarks
+
 The function has more control-flow states than the compiler can handle. Simplify control flow or split the function into smaller functions.
 
 This error is obsolete in Visual Studio 2022 and later versions.

docs/error-messages/compiler-errors-1/fatal-error-c1045.md

@@ -10,4 +10,6 @@ ms.assetid: 766c2f89-4ecd-4281-adaa-14b270cc0829
 
 > compiler limit : linkage specifications nested too deeply
 
+## Remarks
+
 Nested externals exceed the compiler limit. Nested externals are allowed with the external linkage type, such as **`extern`** "C++". Reduce the number of nested externals to resolve the error.