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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
3 W& x. H. Y+ y# i- {" L% b) n0 B if <condition> then
7 r! Q: j7 V3 i) I' z1 l <statement sequence1>;
^$ v( u' r$ w elseif <condition> then& B. f1 x# q/ Q/ O
<statement sequence2>;0 z, [3 d. ?# D. W
else & h, i9 p: T1 c" s& ^
<statement sequence3>;
1 x, v* G$ X0 N2 M, h end;
9 V8 Q9 Z. P/ Q# u3 {3 A- x如果分支比较多，用：/ `0 L1 `* X& I3 Y: `; E7 L4 `
inspect <expression>
+ \) d H& | I1 }; Z6 X when <constant_list> then
4 b: p$ w: F, x6 @0 s7 k$ d4 l <statement sequence1>;
. e7 _5 k" t; C/ i; J$ b, E2 G when <constant_list> then# L9 R) H7 L) W2 A1 V; A
<statement sequence2>;0 w( ^- |4 w: X! m. O% M# k5 w
...( G- O) c4 R" \3 l; O% \5 O
else! ~) J3 f# o: q/ w' q
<statement sequence3>;
4 V* V* o) k1 A. W# }4 u% Uend;
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3 p7 e5 ?4 r. n/ @# q- o0 D4 T2循环语句9 ~ a8 @! t1 M( ~) I K6 V
(1) from <statement sequence1>. B; @* d. t" u1 m, S
until <condition> loop+ @2 u5 R* J8 @6 E, Y2 d) A
<statement sequence2>;, W* V+ I0 O6 f `, q* j/ S
end;2 l' E3 h4 T" h1 y, E
(2) while <condition> loop- [+ j0 I/ C, g
<statement sequence1>;
9 w& e. p7 R0 Y' e$ H7 q% o end;) V- G- o% G7 O0 F$ w# v, i; [
(3) repeat : E% K) @: i, J/ }
<statement sequence1>;
* ?3 I; U* C$ k+ U* ] until <condition>;
! L& ?. R% P* Y5 k# J7 O( c: t (4) for <condition> to <condition> loop' _: L N- f" @5 m
<statement sequence1>;8 S/ x- P: W0 Q" c$ l# v( P
next;9 d2 J4 q0 E& Q4 q* U
3中断语句
/ T- L. j' d: H3 T0 w waituntil <condition> prio <integer expression>;1 d) F8 ]' _2 K6 k5 z5 B% W
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以上为常用的函数！
$ h K- z* T z m, O7 N: @还有很多，如有需要我把资料发到你邮箱里 $ d/ j2 q/ \( e" p' x
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