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发表于 2012-11-13 08:48:12
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1判断语句/ E6 _; m/ a! ?8 f% { }9 Q, f& T9 q, |; C
if <condition> then' H# k; X: S' o9 L
<statement sequence1>;
, F' N0 h" U/ u9 o0 |3 h2 N0 b elseif <condition> then' y# K" W0 @& W5 c
<statement sequence2>;
6 j# E/ h* u7 J; J else
6 X: o4 f6 D. P) m) a* Q <statement sequence3>;
7 K0 S' l( A0 _0 A9 b end; J+ F: R$ M% r5 S: U; u+ @8 D1 t2 ` n
如果分支比较多，用：
. X }: r3 ]' @ inspect <expression>
3 ~; R+ P' t8 g% M; d when <constant_list> then
, D% f8 W7 k0 `; G <statement sequence1>;
. M' N6 D: k, H$ x, k when <constant_list> then9 E& U% J% R0 x0 i2 B2 e
<statement sequence2>;
* ^% f9 e& C- f5 Q; y ...
& s y- C3 j3 U" g else/ `3 l2 R3 D% e/ K
<statement sequence3>;
! s& k% `/ b; R" i" l" Fend;
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2循环语句# F2 P1 V. v) k! c' D& l: A
(1) from <statement sequence1>, k w- j6 t9 n1 B
until <condition> loop
# }7 s# d7 t" Y3 p6 x3 N9 b- [7 \1 { <statement sequence2>;
9 H. I/ Q2 w; A T$ z) C end;* h" _' L8 p3 a
(2) while <condition> loop
) e4 T& [* m; T" }# Z9 V <statement sequence1>;
2 j. c5 n+ Z5 K% ]% j& H. b end;
9 G9 }. \2 m3 ]+ y (3) repeat
8 } d8 d- b: x7 s5 B7 [ <statement sequence1>;+ D' `* S, G) y
until <condition>;
, j+ {* z" G: v (4) for <condition> to <condition> loop2 ], R/ F, r- {* z
<statement sequence1>;& d# M$ e2 Y8 d- M# z
next;
7 ]& Q0 V5 Z% w B l+ C4 O& F: I3中断语句; t( T& Y5 S1 \9 X
waituntil <condition> prio <integer expression>;
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以上为常用的函数！+ a0 A! `. Q" ~* S; w4 H1 R
还有很多，如有需要我把资料发到你邮箱里 . S- a; T+ ^# D! g/ Z
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