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arduino:data_types:char

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arduino:data_types:char [2013/02/15 20:45] (current)
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 +======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 [[ASCIIchart| ASCII chart]]. 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 [[arduino:communication:Serial/Println | 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   ====
 +
 +<code arduino>  char myChar = 'A';
 +  char myChar = 65;      // both are equivalent
 +</code>
 +
 +====See also   ====
 +
 +*[[arduino:data types:Byte]]
 +*[[arduino:data types:Int]]
 +*[[arduino:data types:Array]]
 +*[[arduino:communication:Serial/Println|Serial.println]]
 +
 +Source: arduino.cc
  
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arduino/data_types/char.txt · Last modified: 2013/02/15 20:45 (external edit)

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