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Address of a variable: Difference between revisions
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a card reader, a card punch or a line printer, or even to a set up in
nuclear physics the results of which are collected by the computer),
or to a filestore maintained by the operating system
To establish a channel with such a device there is a special standard procedure:<pre>
PROC establish = (REF FILE file, STRING idf, CHANNEL chan, INT p, l, c) INT: ~ </pre>
Where the <code>idf</code> string is text describing which device to open, and possibly
options. And <code>chan</code> is the actual device type. Standard
ALGOL 68 are <code>stand
back chan</code>. These determine the type of the pre opened stdio FILEs <code>stand in</code>,
CHANNELS for database queries and particle accelerators etc.▼
<code>stand out</code>, and <code>stand back</code>. A site would be expected to
▲
=={{header|C sharp|C #}}==
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