下列哪个陈述是正确的?
I. There exist parsing algorithms for some programming languages
whose complexities are less than O(n3).
II. A programming language which allows recursion can be implemented
with static storage allocation.
III. No L-attributed definition can be evaluated in The framework
of bottom-up parsing.
IV. Code improving transformations can be performed at both source
language and intermediate code level. (A) I和II
(B)我和四
(C) III和IV
(D)一，三和四答案： (B)
说明： II是错误的，在递归中，编译器无法确定递归调用所需的空间。
III是错误的。参见http://www.cs.sunysb.edu/~cse304/Fall09/Lectures/attributes-handout.pdf
这个问题的测验