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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. M" d# R3 M; w( B8 o( _3 P
if <condition> then
4 L1 E; @1 V3 h/ @! n# m <statement sequence1>;
' ^8 \* [' q3 e$ ~" M2 R4 _: r, } elseif <condition> then7 e9 f. V/ F, E; `2 B$ W* f d' u
<statement sequence2>;
' O2 D! W7 a( l* G% A: C else
( d0 g. l8 q3 o2 ~' P" Z <statement sequence3>;/ P# B8 K; E( H" @
end;
6 C* z: X5 `, ^: `* h6 l) |如果分支比较多,用:3 x0 J2 D r9 g3 ^: m) G$ }
inspect <expression>
1 e n! T+ J: E when <constant_list> then
, c/ a. b6 P; J# H <statement sequence1>;
1 G3 ^. y+ n$ b$ w+ C3 T5 h when <constant_list> then$ t, M) M9 N. e. ^# b% ]- p- P
<statement sequence2>;
+ q3 B: }& r7 j* Z8 H7 b ...
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<statement sequence3>;
4 j- a) k2 P, w8 B w1 oend;" a6 Z9 u: Y9 J4 h# K& A
! z5 `: ]3 B. r# k, `7 n3 v7 Z2循环语句
0 \" z9 j8 G- P (1) from <statement sequence1>
& d; }( [' r0 C$ s* f until <condition> loop! _0 u i u6 _7 Y
<statement sequence2>;8 ^9 e. s% r" t5 l" x
end;
$ T% f' [. I! w8 U5 P* o, Y (2) while <condition> loop
6 v( A# t; b. c- W <statement sequence1>;; e# T6 C1 v, d( G0 i! ^
end;) I( d3 C1 W, y! z; Q& r
(3) repeat
& c& W8 S: [2 f2 C7 t: I <statement sequence1>;" H1 W* s3 x7 U N* K
until <condition>;
3 h# `0 j7 P% O! ?$ w8 U (4) for <condition> to <condition> loop4 D0 f9 C. M k: O7 p( \3 V& t8 X" S
<statement sequence1>;, M5 s. A- P- J0 m+ W
next;+ b8 x) w+ f, H4 U+ Y
3中断语句9 W2 |% D$ p2 ?* f# `, F/ \
waituntil <condition> prio <integer expression>;
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以上为常用的函数!5 D U% [( M, K6 p5 O
还有很多,如有需要我把资料发到你邮箱里 4 q% I) Z$ w ]3 \4 a
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