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发表于 2012-11-13 08:48:12
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1判断语句 v2 r3 n; Z( [' D6 [
if <condition> then8 C/ R0 j3 l" \+ W' t5 n' m
<statement sequence1>;. _3 h/ ^5 N! ?# \) y6 j9 ]
elseif <condition> then0 b' T, u" E3 ? U$ N9 _
<statement sequence2>;
6 o Z8 `8 F7 o: L' | else 6 P$ h1 r6 s8 D& i. y
<statement sequence3>;
4 z3 N) m! `# {, _' T- S x0 n end;
7 o, Q# c+ T# F% S: K7 f% y) s如果分支比较多，用：
' v5 y9 A/ h- j) J% e0 N; \ inspect <expression>
# O7 ?; D9 O" U3 a8 M when <constant_list> then
4 A9 R! M7 P( S0 |# P <statement sequence1>;
& W1 R8 L( H, f, I3 S$ o& l when <constant_list> then0 D# B7 @5 v+ G, D
<statement sequence2>;( Y( m5 w e5 H) w3 }8 z' A
...
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<statement sequence3>;+ i5 n- g& ^4 Z$ n8 b
end;# w+ ?- b# r, H0 h) u
* s, |- ` c5 H# q8 Q! G$ s( W2循环语句$ }& G( S( J7 Z5 q/ K& z% o+ h
(1) from <statement sequence1>6 R$ e" B+ L! o
until <condition> loop/ \) E( T" C1 `3 q5 P" T# f' K/ H
<statement sequence2>;
- H- v, v9 N5 q! K% C% G, t end;
/ v. u$ l+ ~. `# T$ M; z (2) while <condition> loop
6 z# t0 A0 ^. N/ | \( F! g! h8 r <statement sequence1>;
- v5 I. w! o! n5 S) T2 i" L+ y( y end;
9 v1 ^1 d3 Y& a4 y+ z (3) repeat 1 u+ p7 b: L. z N4 T; S% X6 a. O
<statement sequence1>;
* ?, k8 S, M, r4 S. [; q until <condition>;( t6 S; I. P g$ {/ P. E! q
(4) for <condition> to <condition> loop
$ E% W n. A" z <statement sequence1>;" N/ a$ N; X8 y: a% C f
next;
- x. N# l3 O! D, W. f, |. F3中断语句
2 ]% o& i" a% {" u waituntil <condition> prio <integer expression>;
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0 o; {! y. }. |2 x
以上为常用的函数！
( H, B4 S* L( E3 Z9 E( Q+ @& i6 V还有很多，如有需要我把资料发到你邮箱里
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