High Quality Content by WIKIPEDIA articles! bc is "an arbitrary precision calculator language" with syntax similar to the C programming language. It is generally used by typing the command bc on a Unix command prompt and entering a mathematical expression, such as (1 + 3) * 2, whereupon 8 will be output. There are currently two main dialects: the rigorously defined POSIX bc, and its direct descendant, the much expanded GNU bc (also, GNU bc is available for a wider range of platforms, such as Microsoft Windows). A more recent dialect, Plan 9 bc, is a superset of the former and subset of the latter.

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