Arduino - Return

Arduino

Reference Language | Libraries | Comparison | Changes

## return

Terminate a function and return a value from a function to the calling function, if desired.

#### Syntax:

return;

return value; // both forms are valid

#### Parameters

value: any variable or constant type

#### Examples:

A function to compare a sensor input to a threshold

     int checkSensor(){
        if (analogRead(0) > 400) {
            return 1;
        else{
            return 0;
        }
    }

The return keyword is handy to test a section of code without having to "comment out" large sections of possibly buggy code.

    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

Reference Home

Corrections, suggestions, and new documentation should be posted to the Forum.

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

### Share

### This link has expired.
Please re-subscribe to our Newsletters.

### Subscribe to our Newsletters

Email

Please enter a valid email to subscribe

Arduino Newsletter
Arduino Store Newsletter

### Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy

###### Newsletter

- ©2015 Arduino
- Copyright Notice
- Contact us
- About us
- Careers