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发表于 2012-11-13 08:48:12
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1判断语句0 Y3 P6 _! b) `& F$ k
if <condition> then6 O$ N2 I# r" P3 A. J
<statement sequence1>;& V1 h) t0 y( l7 Z% ~1 D4 O3 c6 H
elseif <condition> then/ P/ t: p8 \* M+ {
<statement sequence2>;/ G$ t% ^: j4 k. X! V0 o
else
! D0 Q/ R3 y0 y! q3 A <statement sequence3>;, i' R# o; c& c' d: E% `+ @$ G
end;1 U$ I9 `9 e5 H! g: _9 E. t6 L) F
如果分支比较多，用：! I; A9 Q) T2 F- T: i! r
inspect <expression>9 p! ?0 w" W3 L0 }5 @
when <constant_list> then# c# G; R, B& p2 n! B. _
<statement sequence1>;2 p7 N! c7 ~7 t# d K+ a
when <constant_list> then( l( j$ m( Y& }; D7 D4 n4 N4 f6 E
<statement sequence2>;
- Z" _' E# h7 O; i- I ...
& M1 x( V; N; @9 e+ M$ j else
3 U: D0 i( o4 p4 ]7 } <statement sequence3>;
; F5 K: `9 `$ gend;
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% y) F8 W# j% Y. b8 ]2循环语句0 |1 c, L1 O0 p x4 @- ]; V
(1) from <statement sequence1>
: Q( V, {$ c+ N until <condition> loop; K3 {: e% |$ \9 Y; V
<statement sequence2>;
: M. j& B; D; n$ E3 _# ?2 Z end;: [. K' @; A; a3 L9 u# [
(2) while <condition> loop+ @2 F1 u' Q4 w; O/ i1 \8 g
<statement sequence1>;/ e9 ^% c, \3 X) M
end;$ d1 J! A+ _8 |6 Q' N- l! m
(3) repeat
* E" R, c* n2 L+ J9 r- k <statement sequence1>;
- I+ v2 c3 s- V( L# w, ?# l9 C until <condition>;' P" H, C$ }% L$ v' e
(4) for <condition> to <condition> loop5 n- \3 J$ P# }# j) W6 @
<statement sequence1>;
+ F# y1 Q- W& y" L# x: h% g next;
* U2 b5 v3 C: s0 E3中断语句5 O3 q/ B$ {4 a h
waituntil <condition> prio <integer expression>;* l, Y d- C+ G0 n
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以上为常用的函数！9 [; ]3 d7 K* K- D) |5 q
还有很多，如有需要我把资料发到你邮箱里 0 Y0 j5 n* M! s7 ~( N+ V2 C
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