ICD20 Homework2

How port your homework1 to homework2

1. remove the main from the scanner.l
2. remove all the #define [TOKEN] [INDEX] in scanner.l (we define them in parser.y with %token)
3. add #include "parser.h" in your scanner.l
4. add a #pragma token on and #pragma token off to control [INFO] and token(type:...)... message, default is off

Please follow the grammar in 01-minipascal-spec.pdf to write your syntax rule in parser.y.