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-.. highlight:: cpp
-
-.. _lang-for:
-
-``for``
-=======
-
-A ``for`` loop is used to repeat a block of statements enclosed in
-curly braces.  ``for`` loops are useful for performing repetitive
-operations, and are often used in combination with :ref:`arrays
-<lang-array>` to operate on collections of data or multiple
-:ref:`pins <gpio>`.  A ``for`` loop is composed of two parts: first, a
-*header*, which sets up the for loop, and then a *body*, which is made
-up of lines of code enclosed in curly braces.
-
-.. contents:: Contents
-   :local:
-
-Syntax
-------
-
-There are three parts to the ``for`` loop header: an *initialization*
-expression, *loop condition* expression, and a *post-loop*
-expression.  The general syntax looks like this::
-
-    for (initialization; condition; post-loop) {
-        // all of these lines inside the curly braces are part
-        // of the loop body.
-        statement 1;
-        statement 2;
-        ...
-    }
-
-(Note that there is no semicolon after the post-loop).  The
-initialization happens first and exactly once, before the loop begins.
-Each time through the loop, the condition is tested.  The condition is
-a :ref:`boolean <lang-boolean>` expression.  If it is true, then the
-list of statements inside the curly braces are executed.  Next, the
-post-loop is executed.  The loop then begins again by evaluating the
-condition again, entering the loop body if it is true.  This proceeds
-until the condition becomes false.
-
-Examples
---------
-
-Here's an example::
-
-    // Dim an LED using a PWM pin
-    int pwmPin = 9; // LED in series with 470 ohm resistor on pin 9
-
-    void setup() {
-       pinMode(pwmPin, PWM);
-    }
-
-    void loop() {
-       for (int i=0; i <= 65535; i++) {
-          pwmWrite(pwmPin, i);
-          delay(1);
-       }
-    }
-
-There is a ``for`` loop In the :ref:`loop() <lang-loop>` function of
-the above example.  This loop starts by declaring an ``int`` variable
-named ``i``, whose value starts out at zero.  The loop proceeds by
-checking if ``i`` is less than or equal to 65535.  Since ``i`` is
-zero, this is true, and so the calls to :ref:`pwmWrite()
-<lang-pwmwrite>` and :ref:`delay() <lang-delay>` happen next.  At this
-point, the post-loop expression ``i++`` is evaluated, which
-:ref:`increments <lang-increment>` ``i``, so that ``i`` becomes one.
-That concludes the first time through the loop.  Each "time through
-the loop" is referred to as an *iteration*.
-
-The loop then jumps back to the beginning, checking the condition as
-the beginning of its second iteration (initialization is skipped,
-since this only happens once, before the first iteration).  One is
-less than 65535, so the loop statements are executed again.  This
-proceeds over and over until the iteration when ``i`` finally
-reaches 65536.  At that point, the condition is no longer true, so the
-loop stops executing, and the ``loop()`` function returns.
-
-Here's another example, using a ``for`` loop to brighten and fade an
-LED (see the :ref:`pwmWrite() <lang-pwmwrite>` reference for more
-information)::
-
-    int pwmPin = 9; // hook up the LED to pin 9
-    void loop() {
-       int x = 1;
-       for (int i = 0; i >= 0; i += x) {
-          analogWrite(pwmPin, i); // controls the brightness of the LED
-          if (i == 65535) {
-              x = -1;             // switch direction, so i starts decreasing
-          }
-          delay(1);
-       }
-    }
-
-Coding Tips
------------
-
-The C ``for`` loop is more flexible than ``for`` loops found in some
-other computer languages, including BASIC.  Any or all of the three
-header elements may be left blank, although the semicolons are
-required. Also the statements for initialization, condition, and
-post-loop can be any valid C statements, and use any C datatypes,
-including :ref:`floating point numbers <lang-double>`. These types
-of unusual ``for`` loops sometimes provide solutions to less-common
-programming problems.
-
-For example, using a multiplication in the post-loop line will
-generate a `geometric progression
-<http://en.wikipedia.org/wiki/Geometric_progression>`_::
-
-    for(int x = 1; x <= 100; x = x * 2) {
-        SerialUSB.println(x);
-    }
-
-
-This loop prints out the numbers 1, 2, 4, 8, ..., 64.  Check
-your understanding of ``for`` loops by answering the following two
-questions (answers are in footnote [#fanswers]_\ ):
-
-1. How many iterations occur before the loop finishes?
-
-2. Why does it stop at 64?
-
-See also
---------
-
-- :ref:`while <lang-while>` loops
-- :ref:`do <lang-dowhile>` loops
-
-.. rubric:: Footnotes
-
-.. [#fanswers]
-   1. Seven.
-
-   2. After the seventh iteration, the post-loop causes ``x`` to
-      equal 128.  This is larger than 100, so the loop condition is
-      false, and the loop stops.
-
-
-.. include:: cc-attribution.txt