---
title: "<climits>"
ms.date: "11/04/2016"
f1_keywords: ["<climits>"]
helpviewer_keywords: ["climits header"]
ms.assetid: 7ca8a539-aa45-4ac3-86e8-74513be3f07e
---
# &lt;climits&gt;

Includes the Standard C library header \<limits.h> and adds the associated names to the `std` namespace.

## Syntax

```cpp
#include <climits>
```

## Remarks

Including this header ensures that the names declared using external linkage in the Standard C library header are declared in the `std` namespace.

## See also

[Header Files Reference](../standard-library/cpp-standard-library-header-files.md)<br/>
[C++ Standard Library Overview](../standard-library/cpp-standard-library-overview.md)<br/>
[Thread Safety in the C++ Standard Library](../standard-library/thread-safety-in-the-cpp-standard-library.md)<br/>