Merge pull request #5480 from MicrosoftDocs/FromPublicMasterBranch

Confirm merge from FromPublicMasterBranch to main to sync with https://github.com/MicrosoftDocs/cpp-docs (branch main)

Author: PhilKang0704

docs/error-messages/compiler-errors-1/compiler-error-c2101.md

@@ -1,24 +1,22 @@
 ---
 description: "Learn more about: Compiler Error C2101"
 title: "Compiler Error C2101"
-ms.date: "11/04/2016"
+ms.date: "03/04/2024"
 f1_keywords: ["C2101"]
 helpviewer_keywords: ["C2101"]
-ms.assetid: 42f0136f-8cc1-4f2b-be1c-721ec9278e66
 ---
 # Compiler Error C2101
 
 '&' on constant
 
-The address-of operator ( `&` ) must have an l-value as operand.
+The [address-of operator (**`&`**)](../../cpp/address-of-operator-amp.md) must have an l-value as operand.
 
 The following sample generates C2101:
 
 ```cpp
 // C2101.cpp
-int main() {
-   char test;
-   test = &'a';   // C2101
-   test = 'a';   // OK
+int main()
+{
+    int* ptr = &123;   // C2101
 }
 ```

docs/error-messages/compiler-errors-1/compiler-error-c2102.md

@@ -1,13 +1,27 @@
 ---
 description: "Learn more about: Compiler Error C2102"
 title: "Compiler Error C2102"
-ms.date: "11/04/2016"
+ms.date: "03/03/2024"
 f1_keywords: ["C2102"]
 helpviewer_keywords: ["C2102"]
-ms.assetid: d15b5fa3-fa46-4cd4-a3d2-3661646ecb7a
 ---
 # Compiler Error C2102
 
 '&' requires l-value
 
-The address-of operator ( `&` ) must have an l-value as operand.
+The [address-of operator (**`&`**)](../../cpp/address-of-operator-amp.md) must have an l-value as operand. Address of temporary values cannot be taken.
+
+The following sample generates C2102:
+
+```cpp
+// C2102.cpp
+int func()
+{
+    return 1;
+}
+
+int main()
+{
+    int* ptr = &func();   // C2102
+}
+```

docs/error-messages/compiler-errors-1/compiler-error-c2103.md

@@ -1,13 +1,26 @@
 ---
 description: "Learn more about: Compiler Error C2103"
 title: "Compiler Error C2103"
-ms.date: "11/04/2016"
+ms.date: "03/04/2024"
 f1_keywords: ["C2103"]
 helpviewer_keywords: ["C2103"]
-ms.assetid: dfe95972-35e9-469a-b8a8-52c849d4e4e4
 ---
 # Compiler Error C2103
 
 '&' on register variable
 
 You cannot take the address of a register.
+
+The following sample generates C2103:
+
+```c
+// C2103.c
+int main(void)
+{
+    register int x = 1;
+    int* ptr = &x;   // C2103
+}
+```
+
+> [!NOTE]
+> This error applies to C code.

docs/error-messages/compiler-errors-1/compiler-error-c2487.md

@@ -1,13 +1,29 @@
 ---
 description: "Learn more about: Compiler Error C2487"
 title: "Compiler Error C2487"
-ms.date: "11/04/2016"
+ms.date: "03/04/2024"
 f1_keywords: ["C2487"]
 helpviewer_keywords: ["C2487"]
-ms.assetid: 95d734fb-64ac-488d-b799-64f084eecb09
 ---
 # Compiler Error C2487
 
 'identifier' : member of dll interface class may not be declared with dll interface
 
 You can declare a whole class, or certain members of a non-DLL interface class, with DLL interface. You cannot declare a class with DLL interface and then declare a member of that class with DLL interface.
+
+The following sample generates C2487:
+
+```cpp
+// C2487.cpp
+// compile with: /c
+class __declspec(dllexport) C
+{
+    __declspec(dllexport) void func() {}   // C2487
+};
+```
+
+To resolve this error, remove the DLL interface on the class or the members.
+
+## See also
+
+[Using `dllimport` and `dllexport` in C++ classes](../../cpp/using-dllimport-and-dllexport-in-cpp-classes.md)