break is used to exit from a do, for, or while loop, bypassing the normal loop condition. It is also used to exit from a switch statement.


for (x = 0; x < 255; x ++)
    digitalWrite(PWMpin, x);
    sens = analogRead(sensorPin);  
    if (sens > threshold){      // bail out on sensor detect
      x = 0;

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The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.