1. Connect jobs (P121 Exercise 1), to complete 4), 5) two steps.
1) calculating and FIRSTVT LASTVT.
2) find a three relationships right.
3) construction operator precedence table.
4) whether the operator priority to grammar?
5) given input string (a, (a, a)) # of operator precedence analysis.
2. Try parser written bottom-up.
Expression can be written only partially.
answer:
3. The following statement is given ternary type, quaternary style and Reverse Polish Notation.
a*b＋（c－d)／e
