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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
1 `$ B& p# C) A& j2 S if <condition> then
# G H; W5 d e# T <statement sequence1>;
3 _# d6 f! a8 ` elseif <condition> then* I" [* u7 M+ g i, A
<statement sequence2>;
1 z2 W3 x- s+ a# G3 h5 I* ? else 2 U# v0 _ r9 }6 v
<statement sequence3>;1 V7 S/ e/ x G3 b
end;% |0 k' L9 i3 ~5 N- K
如果分支比较多，用：
1 W1 J( H$ r }! W! | inspect <expression>4 \5 J# O( @; P- ^9 o$ o+ P
when <constant_list> then; {$ Y! G; ?$ W, T( p
<statement sequence1>;- V9 U, x+ t# S
when <constant_list> then
( y! P, d+ b7 @6 i4 ~ <statement sequence2>;
# C* | c* A) r* U% D+ V ...
4 P4 K( e# K6 ^2 u! v( q) y: q else# O3 c; e! T E9 m* c: C9 G
<statement sequence3>;
* e6 I1 w# O& a$ j' qend;
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$ S7 D, h+ I$ \' m. u! l, L7 Q8 i2循环语句) \: F" i0 g2 z- V
(1) from <statement sequence1>! I. i7 J( q% k
until <condition> loop) i% m) E1 Y) z6 f
<statement sequence2>;
2 ~- U& l/ o- y, J0 @: S6 T# E end;% R& Q. L S8 U0 c; X$ |. o
(2) while <condition> loop
) S* H3 \) D0 u" _# F+ h) P <statement sequence1>;0 B8 n) U- C" Q
end;
l' f! e0 ^, \# u (3) repeat ! |: X- N# w/ O4 s' O
<statement sequence1>;
7 x$ {/ w L. Y& F7 Z$ @ until <condition>;
J9 C5 |+ s/ t (4) for <condition> to <condition> loop4 \7 | ]. E% v. U
<statement sequence1>;. ^6 w/ X5 U6 I. @6 T% V
next;. p9 _* n# B$ l0 w3 e* V3 h
3中断语句
( i( \, _0 ^; a waituntil <condition> prio <integer expression>;# b4 l% V' S6 ]
( Y) `; u1 T F
: E! s5 O V% U2 R9 J以上为常用的函数！5 P9 u; `+ Y7 n% O& ?7 d( T6 [- G
还有很多，如有需要我把资料发到你邮箱里 5 n, t6 T! M# w5 i
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T" t6 a6 E- S1 @% N9 n6 H& ~) K. [
" i3 ^8 I3 @/ o [, ]1 ?
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