How To Install LEX and YACC in Linux or Ubuntu
To program LEX programs and yacc programs you need to install two packages in Ubuntu 1:Flex -to make the Lex program work 2.Bison -to make the yacc programs work To install,Open terminal and do the following... 1.To install Flex sudo apt-get upgrade sudo apt-get install flex 2.To install Lex sudo apt-get upgrade sudo apt-get install bison And its done ..!!!