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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0 T P* M& w+ n& r) z9 D
if <condition> then9 c) ^$ m+ |, F) e; y! t# w
<statement sequence1>;
- O n# u8 q; m$ V3 G$ Q8 M elseif <condition> then8 I/ T1 o& a6 h: h. e! p5 F
<statement sequence2>;
: o; `1 _, Y( t! r; H5 y else
N3 I7 {0 H; A; z! w$ `' R <statement sequence3>;
# Y& d' | I! A$ F( s6 x- L end;
; ~' L6 ? W; Z% a如果分支比较多,用:4 D, v3 }- g/ y7 }2 ~. y
inspect <expression>: Z E! v7 O! Y; ~3 x5 N% k
when <constant_list> then
4 v/ N1 T* l: Y <statement sequence1>;* Z) g5 K6 Y; ?! q H
when <constant_list> then1 b( L6 `- e& }& |1 s& l
<statement sequence2>;
5 a9 \( r. ]# O: | ...
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<statement sequence3>;
7 O6 M/ Q; N" s: ~' {- gend;0 D0 a! y& M. P9 M! U
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2循环语句' U6 u: x5 [* D2 w! C0 X
(1) from <statement sequence1>
) U. P% a$ A/ b4 B! p. k until <condition> loop7 G( B1 I# ^- n2 f" i* h
<statement sequence2>;
' P% i, E& Q+ r6 ] end;
( r0 a$ t1 F( p8 J (2) while <condition> loop& w, }. Z5 [8 f) l. _( F6 x/ p8 f
<statement sequence1>; x, w. @" @) u9 [
end;- c$ U# t) A$ v5 p- z
(3) repeat & s, |3 m* O9 `0 C
<statement sequence1>;/ g. X* Y: ~' m. i9 z& n& d
until <condition>;* A j. F6 L" \" ?1 v
(4) for <condition> to <condition> loop
g1 l, g6 V* T3 U3 c% ~7 s% D. o6 H <statement sequence1>;
7 {$ y2 C E% l5 y: } next;9 }0 Q6 V3 u2 h g
3中断语句& X R$ C% O$ K1 R* B2 z: k
waituntil <condition> prio <integer expression>;
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& a( Z% `1 I7 b" ~' g9 p以上为常用的函数!
4 z+ W+ F Z" N/ b6 F4 ?7 J还有很多,如有需要我把资料发到你邮箱里 0 }, f! I5 s" D; [- y
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