modified:   hw3/evaluator.cpp
	modified:   hw3/evaluator.h
	modified:   hw3/menu.cpp
	modified:   hw3/parser.cpp
	modified:   hw3/parser.h
	modified:   hw3/symboltable.cpp
	modified:   hw3/symboltable.h
	modified:   hw3/token.cpp
	modified:   hw3/tokenizer.cpp