Merge pull request #5449 from Rageking8/tidy-up-c2018-error-reference

Tidy up C2018 error reference

Author: v-dirichards

docs/error-messages/compiler-errors-1/compiler-error-c2018.md

@@ -1,31 +1,26 @@
 ---
-description: "Learn more about: Compiler Error C2018"
 title: "Compiler Error C2018"
-ms.date: "11/04/2016"
+description: "Learn more about: Compiler Error C2018"
+ms.date: 06/21/2025
 f1_keywords: ["C2018"]
 helpviewer_keywords: ["C2018"]
-ms.assetid: 86b54573-dca0-4446-be1a-e3ac489c073b
 ---
 # Compiler Error C2018
 
-unknown character 'hexnumber'
+> unknown character 'hexnumber'
 
-The source file contains an unexpected ASCII character, which is identified by its hex number. To resolve the error, remove the character.
+## Remarks
 
-The following sample generates C2018:
+The source file contains an unexpected ASCII character, which is identified by its hex number. To resolve the error, remove the character.
 
-```cpp
-// C2018.cpp
-int main() {
-   @   // C2018
-}
-```
+## Example
 
-Possible resolution:
+The following example generates C2018:
 
 ```cpp
-// C2018b.cpp
-int main() {
-
+// C2018.cpp
+int main()
+{
+    @   // C2018
 }
 ```