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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
# e' s7 r, a- F' a) o# D$ l% v# O* I if <condition> then
4 N/ a1 R6 `7 p2 e <statement sequence1>;
) k( ]% M/ T1 ]. O& S elseif <condition> then. s- c5 k. V, q e6 V! D c
<statement sequence2>;) \6 W8 ] c8 V8 ?
else 6 Q, l3 d1 } \3 H/ \
<statement sequence3>;
! l2 C* w; H( d! n& @& j end;& _6 n5 O6 x4 {6 [/ Y
如果分支比较多，用：
8 b! g7 H2 V. B/ K. N: W inspect <expression>
' C# [. U% L( T6 C3 t3 n9 c$ Y when <constant_list> then, v3 a$ V) e c2 O( F- x
<statement sequence1>;
# i9 ]) V4 T5 P" J; e, K$ B8 P" h when <constant_list> then
) U% h% r5 M2 ^" K <statement sequence2>;" R# a- p- f4 c" v3 `. _7 [
...
8 Z% c8 L6 d( y else
4 Z* B. z: D4 x5 Q1 C W l <statement sequence3>;
+ ~" W1 K: \9 c3 Y5 @end;
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2循环语句& A* ^# _) r' D
(1) from <statement sequence1>% R% f$ C8 `5 c% U, Z; j$ A9 c
until <condition> loop
# W. e' s# P" a% V- T, ?/ r& ^2 o <statement sequence2>;& A0 f- |, @* q5 ~( S3 b
end;
' R9 m' q0 m3 D. o9 r0 x (2) while <condition> loop# T, C5 D* y$ I
<statement sequence1>;
* L0 W7 B# c9 V2 ? Y end;" q4 W! ^4 r9 h. X
(3) repeat 8 C: _9 j2 s- o; _1 N
<statement sequence1>;! ]4 N2 B5 z$ U! r4 |5 I, P
until <condition>;
t% m' N' f6 w4 v$ s3 S/ W! n5 q6 T (4) for <condition> to <condition> loop$ N4 ^3 q) r: S, }; u0 W# O. W
<statement sequence1>;& g; d6 d0 [4 J8 X6 @5 G3 j* R
next;
J* X, d- n9 \5 p& E2 D3中断语句
% b% q G! D5 i _ waituntil <condition> prio <integer expression>;
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2 J7 K" ~, s* Z% T" F9 P5 J2 o' ^以上为常用的函数！& C& y/ h5 W/ n) B: K
还有很多，如有需要我把资料发到你邮箱里 $ R) Z' v+ L8 T4 |- O+ b
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