[Compound Operators]


This is a convenient shorthand to perform addition on a variable with another constant or variable.


x += y; // equivalent to the expression x = x + y;


x: variable. Allowed data types: intfloatdoublebyteshortlong.
y: variable or constant. Allowed data types: intfloatdoublebyteshortlong.

Example Code

x = 2;
x += 4; // x now contains 6

See also

  • [Language] Normal Addition

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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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