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86 lines
4.5 KiB
HTML
86 lines
4.5 KiB
HTML
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<title>Arduino - Char </title>
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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> (<a class='wikilink' href='Extended.html'>extended</a>) | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
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</p>
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<p class='vspace'></p><h2>char</h2>
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<h4>Description</h4>
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<p>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").
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</p>
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<p class='vspace'></p><p>Characters are stored as numbers however. You can see the specific encoding in the <a class='wikilink' href='ASCIIchart.html'>ASCII chart</a>. 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 <a class='wikilink' href='Serial_Println.html'>Serial.println</a> reference for more on how characters are translated to numbers.
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</p>
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<p class='vspace'></p><p>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 <em>byte</em> data type.
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</p>
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<p class='vspace'></p><h4>Example</h4>
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<pre> char myChar = 'A';
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char myChar = 65; // both are equivalent
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</pre>
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<p class='vspace'></p><h4>See also</h4>
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<ul><li><a class='wikilink' href='Byte.html'>byte</a>
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</li><li><a class='wikilink' href='Int.html'>int</a>
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</li><li><a class='wikilink' href='Array.html'>array</a>
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</li><li><a class='wikilink' href='Serial_Println.html'>Serial.println</a>
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</li></ul><p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
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<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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