# bc Bc is an arbitrary precision numeric processing language. Syntax is similar to C, but differs in many substantial areas. It supports interactive execution of statements. Bc is a utility included in the POSIX P1003.2/D11 draft standard. This version does not use the historical method of having bc be a calculator for the dc calculator (the POSIX document doesn't specify how bc must be implemented). This version has a single executable that both compiles the language and runs the resulting 'byte code.' The byte code is not the dc language.