Merge pull request #3537 from MicrosoftDocs/master

4/27/2021 AM Publish

Author: Taojunshen

docs/build/reference/fc-full-path-of-source-code-file-in-diagnostics.md

@@ -1,43 +1,53 @@
 ---
-description: "Learn more about: /FC (Full Path of Source Code File in Diagnostics)"
-title: "/FC (Full Path of Source Code File in Diagnostics)"
-ms.date: "11/04/2016"
-f1_keywords: ["VC.Project.VCCLCompilerTool.UseFullPaths", "/FC"]
+description: "Learn more about: /FC (Full path of source code file in diagnostics)"
+title: "/FC (Full path of source code file in diagnostics)"
+ms.date: 04/26/2021
+f1_keywords: ["VC.Project.VCCLCompilerTool.UseFullPaths", "/FC", "-FC"]
 helpviewer_keywords: ["/FC compiler option [C++]", "-FC compiler option [C++]"]
 ms.assetid: 1f11414e-cb42-421b-be68-9d369aab036b
 ---
-# /FC (Full Path of Source Code File in Diagnostics)
+# `/FC` (Full path of source code file in diagnostics)
 
 Causes the compiler to display the full path of source code files passed to the compiler in diagnostics.
 
 ## Syntax
 
-> /FC
+> **`/FC`**
 
 ## Remarks
 
-Consider the following code sample:
+Consider the following code sample, where the source file is located in *`C:\test\compiler_option_FC.cpp`*:
 
 ```cpp
 // compiler_option_FC.cpp
+
 int main( ) {
    int i   // C2143
 }
 ```
 
-Without **/FC**, the diagnostic text would look similar to this diagnostic text:
+Without **`/FC`**, the compiler output looks similar to this diagnostic text:
+
+- compiler_option_FC.cpp(5): error C2143: syntax error: missing ';' before '}'
+
+With **`/FC`**, the compiler output looks similar to this diagnostic text:
+
+::: moniker range="<=msvc-150"
+
+- c:\test\compiler_option_fc.cpp(5): error C2143: syntax error: missing ';' before '}'
 
-- compiler_option_FC.cpp(5) : error C2143: syntax error : missing ';' before '}'
+::: moniker-end
+::: moniker range="msvc-160"
 
-With **/FC**, the diagnostic text would look similar to this diagnostic text:
+- C:\test\compiler_option_FC.cpp(5): error C2143: syntax error: missing ';' before '}'
 
-- c:\test\compiler_option_fc.cpp(5) : error C2143: syntax error : missing ';' before '}'
+::: moniker-end
 
-**/FC** is also needed if you want to see the full path of a file name when using the &#95;&#95;FILE&#95;&#95; macro. See [Predefined Macros](../../preprocessor/predefined-macros.md) for more information on &#95;&#95;FILE&#95;&#95;.
+**`/FC`** is also needed if you want to see the full path of a file name when using the `__FILE__` macro. For more information about `__FILE__`, see [Predefined macros](../../preprocessor/predefined-macros.md).
 
-The **/FC** option is implied by **/ZI**. For more information about **/ZI**, see [/Z7, /Zi, /ZI (Debug Information Format)](z7-zi-zi-debug-information-format.md).
+The **`/FC`** option is implied by **`/ZI`**. For more information about **`/ZI`**, see [`/Z7, /Zi, /ZI` (Debug information format)](z7-zi-zi-debug-information-format.md).
 
-**/FC** outputs full paths in lower case.
+In Visual Studio 2017 and earlier versions, **`/FC`** outputs full paths in lower case. Starting in Visual Studio 2019, **`/FC`** uses the same casing as the file system for full paths.
 
 ### To set this compiler option in the Visual Studio development environment
 
@@ -47,11 +57,11 @@ The **/FC** option is implied by **/ZI**. For more information about **/ZI**, se
 
 1. Modify the **Use Full Paths** property.
 
-### To set this linker option programmatically
+### To set this compiler option programmatically
 
 - See <xref:Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool.UseFullPaths%2A>.
 
 ## See also
 
-[MSVC Compiler Options](compiler-options.md)<br/>
-[MSVC Compiler Command-Line Syntax](compiler-command-line-syntax.md)
+[MSVC compiler options](compiler-options.md)\
+[MSVC compiler command-line syntax](compiler-command-line-syntax.md)