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发表于 2012-11-13 08:48:12
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1判断语句5 M" {* }9 K. x" y
if <condition> then0 h/ R' w( w2 u7 ?8 e
<statement sequence1>;) ]+ g d8 S5 I
elseif <condition> then4 }( C7 O4 n( M+ K+ p0 e3 \
<statement sequence2>;* p4 e, b+ |0 h2 V+ z2 }
else
, v: j% b" V) j3 O- E) g <statement sequence3>;" {$ M4 \1 X t6 `
end;
" z, ~3 o2 h. I# a. c如果分支比较多，用：
/ k# [8 R! x ]; @ inspect <expression>. O4 W4 H+ Q% D
when <constant_list> then" ?% |+ e( \" j; k
<statement sequence1>;; l* V' [* S; X4 a* _
when <constant_list> then. d4 K3 J$ l2 L
<statement sequence2>;
1 i4 q; F" |) D ...
0 [% _; ~+ Q# z8 ~' O. V else
. O/ I) ^; `" `( p* U! j <statement sequence3>;4 u F$ b2 k0 H$ x9 [
end;" }& }5 q) y$ u
- k O: d, w$ n: k4 z3 J, P" I& C2循环语句0 y3 q8 W' Z# ^$ S5 f4 O
(1) from <statement sequence1>
$ z9 g8 U3 |) x4 I* I- r8 c! M s until <condition> loop8 E9 Q# V$ A: [ t: q+ D4 x Z
<statement sequence2>;
( `% b j! o/ c" Z end;9 f' U1 X& \* X/ I
(2) while <condition> loop/ _+ `8 j2 n9 z8 V0 Q0 F0 R, D0 a
<statement sequence1>;
) a9 k9 m# H/ r5 E end;
8 r* p5 a: l- D2 X (3) repeat
' c4 O9 |. h5 ~! R9 Q' w9 Q3 [ <statement sequence1>;0 z) ^: q9 L; m% }- d+ [
until <condition>;
" X2 ~0 m" ?5 W2 ^2 {, A (4) for <condition> to <condition> loop1 m- a L% i6 @
<statement sequence1>;
/ v3 z- |: L+ M- t- E next;- U; i' {3 i# c' W3 o: s
3中断语句
. u- A. T; L3 M. O, M" b& j waituntil <condition> prio <integer expression>; N8 C) r) B9 H* s
8 u+ M4 J1 U/ `! G( s
( G7 e8 s2 v7 `. H0 j `1 c以上为常用的函数！
4 g, n% k: m6 @6 A+ a: _还有很多，如有需要我把资料发到你邮箱里 ( u' z( ^% t, L3 y
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