/Flex-Bison-Arithmetic-Calculator

Primary LanguageC

Flex Bison Arithmetic Calculator

Flex - Flex is a tool that helps break the input into tokens.

Bison - Bison is a tool that helps build the parser using the tokens from the flex program

A C- program that takes an arithmetic expression and returns the calculated value using a parser.

Flex file will contain regular expressions that match the supported arithmetic operations (listed below) and the bison file will contain the grammar.

Operations supported on calculator

  • Addition
  • Subtraction
  • Multiplication
  • Division
  • Logical left shift
  • Arithmetic left shift
  • Logical right shift
  • Arithmetic right shift
  • Exponents (eg. 2^3 = 8)

Windows

Initial Environment Setup
git clone https://github.com/Anurag-Nagpal/Flex-Bison-Arithmetic-Calculator.git
cd Flex-Bison-Arithmetic-Calculator
Build
make calc

The make file contains the following commands

lexer.l parser.y
bison -d parser.y
flex lexer.l
gcc main.c lex.yy.c parser.tab.c -w
./a
Output

Output Image