Lab sample solutions

lab 1: the directory contains the .lex and .yacc, plus two subdirectories of test cases (daveInv and daveVal) and two scripts to run them (daveInv.sh, daveVal.sh)
lab 2: lex file, yacc file
lab 3: quick and dirty tokenizer (splits as words, skipping whitespace, doesn't track row/col)
lab 4: (mostly the parser.h/.cpp, some light tweaks to the tokenizer)
Quiz sample solutions
quiz 1 (VIULearn quiz)
(everyone did quiz 2 and the submissions were good enough that I just put the needed corrections directly on the quiz papers)