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Merge pull request #5601 from Rageking8/structure-error-references-in-range-c2521-c2550
Structure error references in range [C2521, C2550]
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‎docs/error-messages/compiler-errors-2/compiler-error-c2521.md‎

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---
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description: "Learn more about: Compiler Error C2521"
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title: "Compiler Error C2521"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2521"
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ms.date: 11/04/2016
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f1_keywords: ["C2521"]
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helpviewer_keywords: ["C2521"]
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ms.assetid: 6042821b-e345-4a54-a7e9-a2c9019ea016
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---
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# Compiler Error C2521
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function does not take any arguments
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> function does not take any arguments
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## Remarks
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You attempted to use arguments with a destructor or finalizer.
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For more information, see [Destructors and finalizers](../../dotnet/how-to-define-and-consume-classes-and-structs-cpp-cli.md#BKMK_Destructors_and_finalizers).
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## Example
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The following sample generates C2521.
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The following example generates C2521.
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```cpp
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// C2521.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2523.md‎

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---
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description: "Learn more about: Compiler Error C2523"
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title: "Compiler Error C2523"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2523"
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ms.date: 11/04/2016
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f1_keywords: ["C2523"]
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helpviewer_keywords: ["C2523"]
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ms.assetid: 7951b700-8f37-45a0-beb4-a79ae0ced72e
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---
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# Compiler Error C2523
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'class::~identifier' : destructor/finalizer tag mismatch
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> 'class::~identifier' : destructor/finalizer tag mismatch
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## Remarks
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The name of the destructor must be the class name preceded by a tilde (`~`). The constructor and destructor are the only members that have the same name as the class.
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The following sample generates C2523:
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## Example
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The following example generates C2523:
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```cpp
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// C2523.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2524.md‎

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---
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description: "Learn more about: Compiler Error C2524"
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title: "Compiler Error C2524"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2524"
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ms.date: 11/04/2016
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f1_keywords: ["C2524"]
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helpviewer_keywords: ["C2524"]
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ms.assetid: e71d17f5-2fc2-416b-8dbd-e9bed85eb33a
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---
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# Compiler Error C2524
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'destructor' : a destructor/finalizer must have a 'void' parameter list
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> 'destructor' : a destructor/finalizer must have a 'void' parameter list
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## Remarks
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The destructor or finalizer had a parameter list that is not [void](../../cpp/void-cpp.md). Other parameter types are not allowed.
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‎docs/error-messages/compiler-errors-2/compiler-error-c2526.md‎

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---
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description: "Learn more about: Compiler Error C2526"
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title: "Compiler Error C2526"
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ms.date: "03/08/2024"
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description: "Learn more about: Compiler Error C2526"
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ms.date: 03/08/2024
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f1_keywords: ["C2526"]
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helpviewer_keywords: ["C2526"]
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---
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# Compiler Error C2526
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'identifier1' : C linkage function cannot return C++ class 'identifier2'
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> 'identifier1' : C linkage function cannot return C++ class 'identifier2'
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## Remarks
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A function defined with C linkage cannot return a user-defined type.
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The following sample generates C2526:
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## Example
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The following example generates C2526:
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```cpp
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// C2526.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2528.md‎

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---
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description: "Learn more about: Compiler Error C2528"
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title: "Compiler Error C2528"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2528"
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ms.date: 11/04/2016
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f1_keywords: ["C2528"]
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helpviewer_keywords: ["C2528"]
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ms.assetid: 2ea9d583-67a8-4b16-b35f-a50eeffc03c4
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---
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# Compiler Error C2528
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'name' : pointer to reference is illegal
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> 'name' : pointer to reference is illegal
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## Remarks
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You cannot declare a pointer to a reference. Dereference the variable before declaring a pointer to it.
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The following sample generates C2528:
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## Example
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The following example generates C2528:
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```cpp
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// C2528.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2529.md‎

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---
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description: "Learn more about: Compiler Error C2529"
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title: "Compiler Error C2529"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2529"
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ms.date: 11/04/2016
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f1_keywords: ["C2529"]
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helpviewer_keywords: ["C2529"]
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---
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# Compiler Error C2529
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'name' : reference to reference is illegal
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> 'name' : reference to reference is illegal
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## Remarks
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This error may be fixed by using pointer syntax and declaring a reference to a pointer.
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The following sample generates C2529:
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## Example
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The following example generates C2529:
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```cpp
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// C2529.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2530.md‎

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---
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description: "Learn more about: Compiler Error C2530"
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title: "Compiler Error C2530"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2530"
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ms.date: 11/04/2016
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f1_keywords: ["C2530"]
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helpviewer_keywords: ["C2530"]
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ms.assetid: b790a312-48df-4a6a-9e27-be2c5f32f16c
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---
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# Compiler Error C2530
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'identifier' : references must be initialized
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> 'identifier' : references must be initialized
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## Remarks
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You must initialize a reference when it was declared, unless it is declared already:
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- As the return type of a function.
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The following sample generates C2530:
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## Example
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The following example generates C2530:
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```cpp
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// C2530.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2531.md‎

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---
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description: "Learn more about: Compiler Error C2531"
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title: "Compiler Error C2531"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2531"
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ms.date: 11/04/2016
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f1_keywords: ["C2531"]
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helpviewer_keywords: ["C2531"]
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---
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# Compiler Error C2531
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'identifier' : reference to a bit field illegal
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> 'identifier' : reference to a bit field illegal
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## Remarks
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References to bit fields are not allowed.
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The following sample generates C2531:
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## Example
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The following example generates C2531:
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```cpp
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// C2531.cpp

‎docs/error-messages/compiler-errors-2/compiler-error-c2532.md‎

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---
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description: "Learn more about: Compiler Error C2532"
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title: "Compiler Error C2532"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2532"
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ms.date: 11/04/2016
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f1_keywords: ["C2532"]
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helpviewer_keywords: ["C2532"]
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---
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# Compiler Error C2532
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'identifier' : illegal modifier for reference
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> 'identifier' : illegal modifier for reference
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## Remarks
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The reference was changed. References cannot be modified to refer to another object. Use a pointer instead.

‎docs/error-messages/compiler-errors-2/compiler-error-c2533.md‎

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---
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description: "Learn more about: Compiler Error C2533"
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title: "Compiler Error C2533"
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ms.date: "11/04/2016"
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description: "Learn more about: Compiler Error C2533"
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ms.date: 11/04/2016
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f1_keywords: ["C2533"]
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helpviewer_keywords: ["C2533"]
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---
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# Compiler Error C2533
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'identifier' : constructors not allowed a return type
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> 'identifier' : constructors not allowed a return type
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## Remarks
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A constructor cannot have a return type (not even a **`void`** return type).
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A common source of this error is a missing semicolon between the end of a class definition and the first constructor implementation. The compiler sees the class as a definition of the return type for the constructor function, and generates C2533.
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The following sample generates C2533, and shows how to fix it:
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## Example
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The following example generates C2533, and shows how to fix it:
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```cpp
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// C2533.cpp

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