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Jak-MS merged 1 commit into from
Mar 5, 2024
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Update C2101 #4970

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12 changes: 5 additions & 7 deletions docs/error-messages/compiler-errors-1/compiler-error-c2101.md
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---
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
}
```