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+.. highlight:: cpp
+
+.. _lang-while:
+
+``while``
+=========
+
+Syntax
+------
+
+::
+
+    while (expression) {
+      // block of code
+    }
+
+Description
+-----------
+
+``while`` loops will repeat the statements inside their associated
+block of code until the expression inside the parentheses becomes
+:ref:`false <lang-constants-false>`. Something must change the tested
+expressions' value, or the ``while`` loop will never exit.  This could
+be in your code, such as an incremented variable, or an external
+condition, such as testing a sensor.
+
+Example
+-------
+
+::
+
+    var = 0;
+    while(var < 200) {
+      // do something repetitive 200 times
+      var++;
+    }
+
+.. include:: /arduino-cc-attribution.txt