This directory contains examples of Bison grammar files. Most of them come from the documentation, which should be installed together with Bison. The URLs are provided for convenience. # rpcalc - Reverse Polish Notation Calculator The first example is that of a simple double-precision Reverse Polish Notation calculator (a calculator using postfix operators). This example provides a good starting point, since operator precedence is not an issue. Extracted from the documentation: "Reverse Polish Notation Calculator" https://www.gnu.org/software/bison/manual/html_node/RPN-Calc.html # mfcalc - Multi-Function Calculator A more complete C example: a multi-function calculator. Extracted from the documentation: "Multi-Function Calculator: mfcalc". https://www.gnu.org/software/bison/manual/html_node/Multi_002dfunction-Calc.html