Arduino

Reference Language | Libraries | Comparison | Changes

# long

#### Description

Long variables are extended size variables for number storage, and store 32 bits (4 bytes), from -2,147,483,648 to 2,147,483,647.

If doing math with integers, at least one of the numbers must be followed by an L, forcing it to be a `long`. See the Integer Constants page for details.

#### Example

        long speedOfLight = 186000L;   // see the Integer Constants page for explanation of the 'L'

#### Syntax

        long var = val;

- var - the long variable name
- val - the value assigned to the variable

#### See Also

- byte
- int
- unsigned int
- unsigned long
- Integer Constants
- Variable Declaration

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
- Careers