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-.. highlight:: cpp
-
-.. _lang-const:
-
-``const``
-=========
-
-The ``const`` keyword stands for "constant". It is a variable
-*qualifier* that modifies the behavior of the variable, making a
-variable "*read-only*". This means that the variable can be used just
-as any other variable of its type, but its value cannot be
-changed. You will get a compiler error if you try to assign a value to
-a ``const`` variable.
-
-Constants defined with the ``const`` keyword obey the same rules of
-:ref:`variable scoping <lang-scope>` that govern other
-variables. This, and the pitfalls of using :ref:`#define
-<lang-define>`, often makes using the ``const`` keyword a superior
-method for defining constants than ``#define``.
-
-Example
--------
-
- ::
-
-    // this defines a variable called "pi", which cannot be changed:
-    const float pi = 3.14;
-    float x;
-
-    // ....
-
-    x = pi * 2;    // it's fine to find the value of a const variable
-
-    pi = 7;        // illegal - you can't write to (modify) a constant
-
-**#define** or **const**
-------------------------
-
-You can use either ``const`` or ``#define`` for creating numeric or
-string constants. For :ref:`arrays <lang-array>`\ , you will need
-to use ``const``. In general, ``const`` is preferred over ``#define``
-for defining constants.
-
-See Also
---------
-
--  :ref:`#define <lang-define>`
--  :ref:`volatile <lang-volatile>`
-
-.. include:: /arduino-cc-attribution.txt