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发表于 2012-11-13 08:48:12
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1判断语句, A- Q. l2 c) ^: C2 `3 n
if <condition> then
) W+ x* r6 h; p; |" l% R <statement sequence1>;
' z2 T% i. Y; k elseif <condition> then
1 x& `5 k/ Y' K& @! W <statement sequence2>;
m; W, h1 r; X else * g# l) q# q4 O: u2 L2 c& `: Z6 k
<statement sequence3>;
+ w6 L3 z. n! D2 I end;& J, c1 ]" D- x, E& q2 o( M' Z! W
如果分支比较多，用：
' R, z: }6 R' u* G' B! G) j: m# X inspect <expression>7 M$ v+ R) _9 u- n- r% f9 z5 I
when <constant_list> then+ |8 E; w: ? J5 T& ?
<statement sequence1>;
, C8 T/ k8 u) M+ G% v when <constant_list> then
) y" X `6 e. S, b <statement sequence2>;$ w8 u" o* H8 c* K( Y' M
...
2 S5 _) g. S+ N+ T( P else
7 G- h$ N+ j2 J+ Z$ t <statement sequence3>;$ M4 J' q @ y" a1 y3 ]
end;6 X5 y, d& Y3 G4 d, E" B
# O$ F5 K2 U+ _2循环语句+ b# j, r3 f G" ^! e+ [* V2 u
(1) from <statement sequence1>! b+ v- r- E6 j
until <condition> loop- M: X8 q1 Y# s
<statement sequence2>;
. N9 N. f; \+ z end;
6 f& i* I( L2 Z% N5 {( n2 j, m% S (2) while <condition> loop# [0 \: A. F% H' w7 n: ?2 `2 y T
<statement sequence1>;
: h0 n" Y: ^3 J6 v# q* Y# B' L end;
' k+ I1 j4 z+ G* A% b (3) repeat 8 V1 Q( A# h2 ~- I. }+ t% N
<statement sequence1>;
* L9 F9 E$ }& K until <condition>;; F8 U/ J) Y6 P" r/ Z
(4) for <condition> to <condition> loop
! p2 S; V2 `7 f, w <statement sequence1>;8 G; P" } \. Y3 I
next;
$ E f, F. f6 a/ Z7 ^; g! d3中断语句
* p; w; X' z/ e5 Z1 O1 p! R waituntil <condition> prio <integer expression>; R% A7 l7 {8 z- A
+ `. h/ l @! q. ^
& o; f2 G, u, I2 }* ?; g以上为常用的函数！
3 B; o3 z+ k8 Y还有很多，如有需要我把资料发到你邮箱里 + p( Z' v) s: d W0 D' m% _) n5 Z
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