flex program and lex c code

 

https://techapple.net/2014/07/flex-windows-lex-and-yacc-flex-and-bison-installer-for-windows-xp788-1/

https://ecodehacker.com/courses/119340/lectures/2062783

https://winpcapp.com/windows-pc/Flex%20Windows%20(Lex%20and%20Yacc)/FREE-2.5.3.html?