#Compiler Construction

##Author: Jinglun Dong

##Dependency:

• Lexer using flex
• Parser using bison

##How to compile:

• $flex lexer.l
• $bison -d parser.y
• $gcc lex.yy.c parser.tab.c -o parser.out

##How to run:

• $./parser.out < inputStream
• OR:
• $./parser.out inputFile.txt

##Output:

• stdout for rules and symbo table goes to rule.out and symtable.out
• stderr for rules and symbo table goes to rule.err and symtable.err