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Dc (computer program)
dc is a cross-platform reverse-polish desk calculator which supports arbitrary-precision arithmetic. It is one of the oldest Unix utilities, predating even the invention of the C programming language. Like other utilities of that vintage, it has a powerful set of features but an extremely terse syntax.〔(【引用サイトリンク】date=Sep 1979 )〕
Traditionally, the bc calculator program (with infix notation) was implemented on top of dc.
This article provides some examples in an attempt to give a general flavour of the language; for a complete list of commands and syntax, one should consult the man page for one's specific implementation.
==History==
dc is the oldest surviving Unix language. When its home Bell Labs received a PDP-11, dc—written in B—was the first language to run on the new computer, even before an assembler.
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