int's store negative numbers with a technique called 2's complement math. The highest bit, sometimes referred to as the "sign" bit, flags the number as a negative number. The rest of the bits are inverted and 1 is added.

On the Arduino Uno (and other ATMega based boards) an int stores a 16-bit (2-byte) value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1).
On the Arduino Due, an int stores a 32-bit (4-byte) value. This yields a range of -2,147,483,648 to 2,147,483,647 (minimum value of -2^31 and a maximum value of (2^31) - 1).

[@ int x;

Integers are your primary data-type for number storage.

On the Arduino Uno (and other ATMega based boards) an int stores a 16 bits (2 bytes) value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1).
On the Arduino Due, an int stores a 32 bits (4 bytes) value. This yields a range of -2,147,483,648 to 2,147,483,647 (minimum value of -2^31 and a maximum value of (2^31) - 1).

int's store negative numbers with a technique called 2's complement math. The highest bit, sometimes referred to as the "sign" bit, flags the number as a negative number. The rest of the bits are inverted and 1 is added.

When variables are made to exceed their maximum capacity they "roll over" back to their minimum capacity, note that this happens in both directions. Example for a 16-bit int:

Integers are your primary datatype for number storage. On the Uno and other ATMEGA based boards, an int stores a 2 byte value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1). ints on the Due store 32 bits (4 bytes), from -2,147,483,648 to 2,147,483,647

• Variable Declaration

• Variable Declaration

• Integer Constants

When variables are made to exceed their maximum capacity they "roll over" back to their minimum capacitiy, note that this happens in both directions.

The Arduino takes care of dealing with negative numbers for you, so that arithmetic operations work transparently in the expected manner. There can be an unexpected complication in dealing with the bitshift right operator (>>) however.

• >>

Int's store negative numbers with a technique called 2's complement math. The highest bit, sometimes refered to as the "sign" bit, flags the number as a negative number. The rest of the bits are inverted and 1 is added.

The Arduino takes care of dealing with negative numbers for you, so that arithmetic operations work transparently in the expected manner. There can be an unexpected complication in dealing with the bitshift right operator (>>) however.

The Arduino takes care of dealing with negative numbers for you, so that arithmetic operations work trasparently in the expected manner. There can be an additional complication in dealing with the bitshift right operator (>>) however.

Integers are your primary datatype for number storage, and store a 2 byte value. This yields a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1).

Int's store negative numbers with a technique called 2's complement math. The highest bit, sometimes refered to as the "sign" bit is flags the number as a negative number. The rest of the bits are inverted and 1 is added.

The Arduino takes care of dealing with negative numbers for you so arithmetic operations work in the expected manner. There can be an additional complication in dealing with the bitshift right operator (>>) however.

• >>?

[@ int x

Syntax

See Also

• byte
• unsigned int
• long
• unsigned long

Coding Tip

When variables are made to exceed their maximum capacity they "roll over" back to their minimum capacitiy, note that this happens in both directions

   unsigned int x
   x = -32,768;
   x = x - 1;       // x now contains 32,767 - rolls over in neg. direction

   x = 32,767;
   x = x + 1;       // x now contains -32,768 - rolls over

Integers are your primary datatype for number storage, and store a 2 byte value. This gives you a range of -32,768 to 32,767 (minimum value of -2^15 and a maximum value of (2^15) - 1).

Integers are your primary datatype for number storage, and store a 2 byte value. This gives you a range of -32,768 to 32,768 (minimum value of -2^15 and a maximum value of 2^15 - 1).

Integers are your primary datatype for number storage, and store a 4 byte value. This gives you a range of -2147483647 to 2147483647 (minimum value of - 2^31 and a maximum value of 2^31 - 1).

    int var = val;

int var = val;

[int var = val;]

int

Description

Integers are your primary form of number storage, and store a 4 byte value. This gives you a range of -2147483647 to 2147483647 (minimum value of - 2^31 and a maximum value of 2^31 - 1).

Example

Parameters

int var = val;

• var - your int variable name
• val - the value you assign to that variable

Reference Home

    int ledPin = 13;

A data type that is 4 bytes long with a minimum value of - 2^31 and a maximum value of 2^31 - 1. Needed before declaring a new variable in your code.