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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
! s) }, T. r `1 v3 f" U* B if <condition> then. u+ ]/ f! O+ M! \. M
<statement sequence1>;; ~7 z& w5 c9 a/ h8 S: t1 q* R2 E( K8 X
elseif <condition> then4 u* w8 e% ]1 x2 {7 O
<statement sequence2>;. n2 f& {( q: Q: m: k
else
# U# w0 j. F+ q$ s/ ` <statement sequence3>;
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如果分支比较多，用：
. |5 _, ?- `$ I [/ m inspect <expression>1 @" N4 f4 v6 e% t @. V
when <constant_list> then
/ X- j( c+ q: {* {/ v y r' y <statement sequence1>;+ ^( ~. j) [( k! f$ V
when <constant_list> then
# k0 D5 Z5 K- B* e: ]' i <statement sequence2>;
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else
& v1 Q/ `- F" L4 b7 ~8 p <statement sequence3>;* Q3 r* d3 E- I0 z* f
end;
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" P, ^5 b' [7 O2循环语句
1 N5 B6 P0 z; A/ \" l" M7 w (1) from <statement sequence1>
8 t5 j1 t) r$ \( {/ ~0 R until <condition> loop* c: n- q2 ^; q- B& j$ }
<statement sequence2>;' N/ k/ Q% j1 G- H9 ~4 Z4 l
end;
|. s0 v) V; Y$ a' X& d- y (2) while <condition> loop
8 W/ S# ]' j$ ]; Y* _& l <statement sequence1>;
1 v* Z3 s$ Y" @+ y3 S3 j end;1 G3 M# h/ [6 L3 m
(3) repeat - c! j# Q' _- c& Q9 N" X' T: R
<statement sequence1>;
4 R+ T+ t9 q( U+ g& r0 V* A until <condition>;& K8 q' q% A" t# ^) T( H. f6 W" f& o
(4) for <condition> to <condition> loop7 `0 @8 N* l$ ]- ~: y7 H* W
<statement sequence1>;
% O* A5 J% ]4 |! y: T% K2 m next;! V6 g! m- R# j8 c. l0 S9 a! a
3中断语句
5 _4 [% S' x0 F; t& Z7 E7 | waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 M: i5 i3 @! |- ^* r
还有很多，如有需要我把资料发到你邮箱里 , @3 D% {: e* w3 @' x. y! y
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