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.. _arduino-char:
char
====
Description
-----------
A data type that takes up 1 byte of memory that stores a character
value. Character literals are written in single quotes, like this:
'A' (for multiple characters - strings - use double quotes:
"ABC").
Characters are stored as numbers however. You can see the specific
encoding in the
`ASCII chart <http://arduino.cc/en/Reference/ASCIIchart>`_. This
means that it is possible to do arithmetic on characters, in which
the ASCII value of the character is used (e.g. 'A' + 1 has the
value 66, since the ASCII value of the capital letter A is 65). See
`Serial.println <http://arduino.cc/en/Serial/Println>`_ reference
for more on how characters are translated to numbers.
The char datatype is a signed type, meaning that it encodes numbers
from -128 to 127. For an unsigned, one-byte (8 bit) data type, use
the *byte* data type.
Example
-------
::
char myChar = 'A';
char myChar = 65; // both are equivalent
See also
--------
- `byte <http://arduino.cc/en/Reference/Byte>`_
- `int <http://arduino.cc/en/Reference/Int>`_
- `array <http://arduino.cc/en/Reference/Array>`_
- `Serial.println <http://arduino.cc/en/Serial/Println>`_
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