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metatag-description=(Manual page for ASC)
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metatag-og:description=(Manual page for ASC)
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====== ugBASIC User Manual ======

===== ASC ✓ =====

===== SYNTAX =====
     = ASC( string )

==== PURPOSE ====


The ''ASC'' command performs a very specific function: it converts the first 
character of a string into its corresponding ASCII code. ASCII stands for 
American Standard Code for Information Interchange and it is a standard 
encoding that associates each alphanumeric character and many symbols 
with an integer between 0 and 127. This number represents the internal 
representation of the character within the computer.

The ''ASC'' command allows you to manipulate the individual characters 
of a string numerically. For example, you can check whether a character 
is an uppercase letter (its ASCII code will be between 65 and 90), or whether 
it is a number (its ASCII code will be between 48 and 57).

Comparing the ASCII codes of two characters is an efficient way to establish 
the alphabetical order between them and, in some applications, you need to 
convert characters to numbers or vice versa. ''ASC'' is a fundamental tool 
for this type of operation.

In 8-bit computers, memory is organized in bytes, which are sequences of 
8 bits. Each byte can represent a number from 0 to 255. Since ASCII 
encoding uses only 7 bits, a byte can represent 128 different characters.
On 8-bit computers, the supported character set is limited to 128 ASCII 
characters. This means that accented characters or characters from other
languages cannot be directly represented.  The exact meaning of an ASCII 
code can vary slightly depending on the encoding used. Note that the ''CHR$'' 
command is the inverse of ''ASC'', it converts an ASCII code to a character. 



==== EXAMPLE ====
    x = ASC( "UGBASIC" )


See also the following example files:
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/strings_asc_01.bas|strings_asc_01.bas]]''


==== ABBREVIATION ====
   Ax


==== AVAILABLE ON ====
  * 
  * Atari (400/800)
  * Atari XL/XE
  * Commodore 128 (MOS 8502)
  * Commodore 128 (Zilog Z80)
  * Commodore 64
  * Commodore 64+REU
  * TRS-80 Color Computer
  * TRS-80 Color Computer 3
  * ColecoVision
  * Amstrad CPC 664
  * Dragon 32
  * Dragon 64
  * Thomson MO5
  * Thomson MO5
  * Olivetti Prodest PC128
  * Commodore PLUS/4
  * SEGA SC-3000
  * SEGA SG-1000
  * 
  * VG-5000
  * Commodore VIC-20
  * ZX Spectrum 48


==== SEE ALSO ====
[[CHR]] 

==== ANY PROBLEM? ====
If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please [[https://github.com/spotlessmind1975/ugbasic/issues/new?title=ISSUE ON ASC|open an issue]] for this keyword on GitHub. Thank you!===== POWERED BY =====

[[:ugbasic:user:index|{{ :ugbasic:user:logo-ugbasic.png?nolink&600 |}}]]