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发表于 2012-11-13 08:48:12
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1判断语句9 M8 N2 ?6 Q$ F5 q
if <condition> then4 N8 D+ S% ?$ V4 j$ R2 f w
<statement sequence1>;
6 l9 U1 Z0 [$ v' U; ^! ]0 l9 ~ elseif <condition> then9 ]& |+ d7 ~6 x6 s. G
<statement sequence2>;
8 F1 ]. K0 E: s5 H5 r, n2 x else : Q" C$ z0 |1 \4 d; U
<statement sequence3>;
, T$ p) c. [& X end;
+ n# U! {5 Y0 V6 c7 H9 t/ c7 `如果分支比较多，用：
. G4 w ~. e' h7 V& p% C# Y% ` inspect <expression>
, v+ R5 w; V1 D$ h when <constant_list> then
( U& l& o# U: I; b z4 p& w <statement sequence1>;
3 J- v+ z5 y2 {" d$ M0 A8 Z when <constant_list> then
( L# `* ]$ a* o% B <statement sequence2>;
, J" t: G0 H$ H; ]5 l. D ...
* n M% \5 X8 d% L) N) P else
3 y% S- O* W* A5 b4 I7 ]( ]) M6 n <statement sequence3>;, O4 T1 ~# n% Y; d, ]* j8 V
end;
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2 q1 t; [5 z' a6 o0 k1 n2循环语句$ E1 G3 D x4 ]$ p. p( q& `
(1) from <statement sequence1>
) r! }( g0 W5 ] until <condition> loop
; q* \! ?( K( |& t2 o9 f' b: ] m <statement sequence2>;$ A/ O* ?9 i6 @5 @4 k: S! d
end;
2 ?; I$ ? V$ e* o1 ^4 B (2) while <condition> loop
. o" W% l8 q4 _2 C: |1 F <statement sequence1>;
3 e9 a m; X! w4 B end;) p: h4 l% O0 [3 c. `( }7 V/ c' P
(3) repeat
. W8 I" X7 x- G3 c9 g# @6 Q3 | <statement sequence1>;' ?/ i8 Y" J) ]8 b% C0 O" U2 [
until <condition>;; G6 R& f# ~$ U; a' g
(4) for <condition> to <condition> loop& k! v- R1 D. I' z+ m. n7 d
<statement sequence1>;
- ]- p7 |8 l; A" u* [% _8 `+ a next;! ?9 Y- T" L' {; K: N8 x1 E4 x
3中断语句
, u- n" M. \1 {) X4 k1 ~ waituntil <condition> prio <integer expression>;: _* T# P3 E4 S
: H- D" r0 X3 O% G/ _
& G, S, _3 i5 B* N" d$ x4 ]& o以上为常用的函数！
$ ^' ^0 X8 ^+ g# F6 C7 a还有很多，如有需要我把资料发到你邮箱里 4 \- v/ R" G* T0 c
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