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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
% N# [" i- h# i/ b4 l if <condition> then9 ?9 |" i+ N4 P1 b# _ I" C8 b6 p; K
<statement sequence1>;8 I" v5 A+ }. g9 @& h. T! C
elseif <condition> then
' k( _7 E" J& c$ q" _$ A <statement sequence2>;- j$ G6 _) l( g, w7 m8 g
else ! n7 t* K+ K/ b( y. `! b
<statement sequence3>;
/ n- e) ^+ H2 n" q* P8 e/ w' | end;+ O% [0 \! x5 f: P# ?# e
如果分支比较多,用:" w5 \( ], F2 S* m c* [5 s2 o
inspect <expression>. O5 A; U7 m8 k0 \6 ~0 T/ r
when <constant_list> then
( W, t8 G5 n& P% h <statement sequence1>;( f3 B! T: `6 s' Y
when <constant_list> then" G, q# l; E9 D8 \, |. ^
<statement sequence2>;9 W" x' A4 L. `0 x) [3 o* S% E& ]1 E
...5 v" c& X( ]; u3 r$ r
else0 @( K4 T2 Q3 \& h- N
<statement sequence3>;
: {* @- L& g- N L6 mend;. s) Y) e, i q# I. ^
% m- y( c. L! L! _0 F2循环语句: V3 X: d! \5 ]' C% n* X
(1) from <statement sequence1>% p2 @0 {# r6 L& V
until <condition> loop4 b' V; }- g9 d- T
<statement sequence2>;# e: s+ ^% E/ `: l+ ?# @+ O
end;& B; S, [2 [) Q$ \+ o& S- Q8 y
(2) while <condition> loop: A8 S3 g, S7 `* o' _
<statement sequence1>;
! c& ~. A; l- U4 b end;
! {5 `; H/ `" t. ~/ I. a; g: @6 J \ (3) repeat 9 H! k+ I( c! o; B5 d! |2 O
<statement sequence1>;
0 Y, G) |' j! j* T# \) t5 h until <condition>;
9 n+ C3 i# [, F. `% Z: B (4) for <condition> to <condition> loop$ v6 i% e# l+ x% ]
<statement sequence1>;
6 H' Z& t4 P" L, M/ R next;
* r$ R# Y0 [9 N9 N3中断语句
% B- W' B0 Q; I" {4 h4 _' b waituntil <condition> prio <integer expression>;4 C: O/ I5 q, \2 ?" _+ e
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以上为常用的函数!0 N; L8 K# U% n8 y! I3 w
还有很多,如有需要我把资料发到你邮箱里 5 Z& p8 V; w; p2 v# I. Q7 C5 Z9 Z
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/ q4 G& @1 @9 j R# g " K6 L% i1 C$ {9 g ~/ }
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