#992 – The System.Char Data Type

In C#, the char keyword is a synonym for the System.Char data type in the Base Class Library (BCL).  An instance of a char represents a single character, i.e. a single unit that is part of a written language.

Some examples of characters, all of which can be represented by a char:

  • Uppercase or lowercase alphabetic characters from the English (Latin) alphabet (a..z, A..Z)
  • Accented alphabetic characters
  • Alphabetic characters from other alphabets (e.g. Greek, Cyrillic, Hebrew, Chinese, Arabic, etc).
  • Punctuation marks  (e.g. ! , = [ {, etc).
  • Numeric digits (0..9)
  • Control or formatting characters (e.g. end-of-line, delete)
  • Mathematical and musical symbols
  • Special graphical glyphs (e.g. trademark symbol, smiley face)

A character stored in an instance of a char takes up 2 bytes (16 bits).  The values are encoded as Unicode characters, using the UTF-16 encoding.

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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