return — Maple v0.0.12 Documentation

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# `return`

Terminates a function and return a value from a function to the calling function, if the function has non-`void` return type.

## Syntax:

    // from within a "void" function:
    return;

    // from within a non-"void" function:
    return value;

In the second case, `value` should have a type which is the same as the return type of the function, or be convertible to it (like an `int` to a `double`, etc.; see this note for some references).

## Examples:

A function to compare a sensor input to a threshold:

     // converts analog readings between 0 and 400 to 0, and 400 up to 1.
     int checkSensor() {
        if (analogRead(0) > 400) {
            return 1;
        else {
            return 0;
        }
    }

An early `return` is also useful when testing a section of code without having to “comment out” large sections of possibly buggy code, like so:

    void loop() {

        // brilliant code idea to test here

        return;

        // the rest of a dysfunctional sketch here
        // this code will never be executed
    }

## See Also

- comments

License and Attribution

Portions of this page were adapted from the Arduino Reference Documentation, which is released under a Creative Commons Attribution-ShareAlike 3.0 License.

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