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发表于 2012-11-13 08:48:12
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1判断语句
& B$ K- y' R# O" p$ \0 t7 u if <condition> then
9 B% P, ?! f7 x- L4 c' W <statement sequence1>;
; e) ?- G0 D1 n6 w$ B elseif <condition> then' D$ u) ?% J* {1 [! J# H* e- ]; n0 ?
<statement sequence2>;
o8 A1 V; w! Q6 K/ z else . {. V- M- Q H! m/ d5 w
<statement sequence3>;1 S, F- S" p" I V' m P0 z
end;) b% W* x% _. M4 J8 M0 r
如果分支比较多，用：
& p7 S5 a, h; a' X/ B1 v0 j( U/ ? inspect <expression>' ?. b2 w) O$ o% }5 U2 w o) W
when <constant_list> then6 l9 M( \8 y! C9 d
<statement sequence1>;9 l2 T, u5 y# x1 {
when <constant_list> then
; J, n4 Z8 b8 `4 M <statement sequence2>;
+ m9 ^4 h4 ^9 J7 ^! U ...
8 ~7 \) F1 Q& z- W& Z, [' n else
; P: f3 _7 w1 q" ^; ?* D. \ <statement sequence3>;
- a' w4 g' b1 ]$ S6 H. nend;
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. ]7 U$ m: h P2循环语句
/ y8 v, B, w$ g4 B" U5 e0 | (1) from <statement sequence1>
$ A- I4 ?. g# g0 u- x$ O; a1 f0 w: h until <condition> loop
& x I7 o4 r" [; G <statement sequence2>;# [- C9 D9 Q1 p- z
end;5 U; `# w; | }
(2) while <condition> loop/ q/ R( }) J* a6 G6 X
<statement sequence1>;
8 r& {) Q) s- t end;
' C1 H+ ?1 H9 n1 g# N- u (3) repeat 1 a' ~5 {6 e7 D6 Y) f5 Z7 N* y. W
<statement sequence1>;
# l0 I5 o5 s8 p0 s9 b* H1 _ until <condition>;$ n* k& ~. d# h' m9 Q
(4) for <condition> to <condition> loop) j/ m) f- Z& B! `# z
<statement sequence1>;
' j1 i7 d" k L. a# b next;
6 _/ Y( B/ e. z- z3中断语句# _/ A: i, v* O/ K: u
waituntil <condition> prio <integer expression>;
+ b+ T8 u5 e4 U# e
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. N- { A: B3 ~& Q* `* i( E以上为常用的函数！
/ h& \9 d9 J3 d还有很多，如有需要我把资料发到你邮箱里 5 ^8 i' H& ]5 C/ c' V
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