[Data Types]


The void keyword is used only in function declarations. It indicates that the function is expected to return no information to the function from which it was called.

Example Code

// actions are performed in the functions "setup" and "loop"
// but  no information is reported to the larger program
void setup()
  // ...
void loop()
  // ...

See also

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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.

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