Lex-Yacc-Programs

Installation

sudo apt-get install flex
sudo apt-get install byacc
sudo apt-get install bison

Compile & Run

Lex Programs

lex <lex filepath> && gcc -lfl lex.yy.c && ./a.out < input.txt | sed '/^$/d'

We use sed to remove empty lines.

Lex + Yacc Programs

flex <lex filepath>
bison -dy <yacc filepath>
gcc -lfl lex.yy.cc y.tab.c
./a.out < input.txt | sed '/^$/d'

OR (in short)

flex <lex filepath> && bison -dy <yacc filepath> && gcc -lfl lex.yy.cc y.tab.cc && ./a.out < input.txt | sed '/^$/d'

We use sed to remove empty lines.

Contribution

Feel free to raise issues and send PRs for new programms