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发表于 2012-11-13 08:48:12
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1判断语句3 s" J) R2 {/ A. P t' O+ T
if <condition> then
% J% K- C6 f7 a' g0 f <statement sequence1>;! f3 H* j1 u* v7 F6 k) y
elseif <condition> then% H+ j; O4 N, h1 {
<statement sequence2>;
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<statement sequence3>;& L: b& E- Q" M( w
end;6 _5 R6 D* N* E1 g+ H d
如果分支比较多，用：
; s% o$ X$ O9 w6 B7 Q. e) o. p inspect <expression>& W" ?7 @8 D& N8 S8 k" v
when <constant_list> then% `) w- a4 G% @ r/ @& j
<statement sequence1>;% l. i0 [# Q4 J2 R4 m4 _1 S7 D8 R; a6 B
when <constant_list> then/ Q' U9 J3 d$ q, ]6 k9 f! f
<statement sequence2>;
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else
% l1 d. g b. J7 [ <statement sequence3>;
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* W8 s( [) q# ?+ y5 E& o2循环语句; _9 A/ f2 P* x- r2 R8 W' M3 {$ f
(1) from <statement sequence1>, u$ X6 A; R) |; G: L
until <condition> loop
1 {' g% ]" ^4 j# s: \. f <statement sequence2>;
! s) E& m. ]# E end;. G* c& @+ C) ?: X. S/ q+ f+ L& v
(2) while <condition> loop
' @* d& A" c5 D t } <statement sequence1>;
1 \7 W1 X: \. E end;
! ` G6 o+ }% z3 S' Z (3) repeat 2 ?( u- J) s& F- s; a" i6 V' A
<statement sequence1>;$ {* ^: x) A! @/ s' v
until <condition>;
1 c) f; H; A" }# t4 U& k7 G( ] (4) for <condition> to <condition> loop- v- V. N& d- X
<statement sequence1>;
, p6 y, e8 T! V" S% ]7 f next;9 A6 U8 i8 P \5 W/ o: N- t( y5 N
3中断语句- m0 @" \' `# A6 L
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
1 H$ h _+ [& K+ b还有很多，如有需要我把资料发到你邮箱里 8 X+ x+ N# Z D, R- L
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