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发表于 2012-11-13 08:48:12
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1判断语句
# O# y8 D, W$ m S+ D- n! r1 ` if <condition> then! G8 Z% P4 W- k, z4 G
<statement sequence1>;
3 G+ D" [- T3 g2 p elseif <condition> then
+ B$ ~( W7 A+ g4 B# y7 S- d/ u <statement sequence2>;& N1 M! N/ [3 h" H- h+ N
else
$ \8 H7 d: N9 o7 m7 x, K <statement sequence3>;
" k* d6 j' |2 ?% J9 U. D d end;
$ k3 ]6 h& S [% f& u如果分支比较多，用：
. H' k# G: Y: D3 f inspect <expression>$ `! U& r6 ^: ~
when <constant_list> then
2 D, t: V9 Z k; Y& F" C, Y+ O6 h <statement sequence1>;, X9 [! `1 P1 ]. ?
when <constant_list> then! X5 Q' ~/ A8 K( O* y- w; n0 m: c( k
<statement sequence2>;- G1 C* V5 k6 A. S. Q% C
...! [4 y1 z- c% N9 g* r `( }2 ]1 j
else
' Q" }: B$ U0 ~1 k3 x Y <statement sequence3>;
7 O8 n2 A. i" x5 {# Zend;
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1 w3 w5 K* r) I8 m5 Q* ^! ]2循环语句9 J" |, A, T7 p& ^
(1) from <statement sequence1>
% W9 B- B) j) Y; \ until <condition> loop
. v; I1 N8 Z9 J <statement sequence2>;6 e) x9 ?7 J6 W% H1 m1 R: k+ A$ j
end;
$ V$ [5 c) ^7 ` (2) while <condition> loop
% m8 C! r/ W6 S <statement sequence1>;' I" H, ~3 N F p$ t: V
end;
8 Q+ U) v6 }* w( N$ R. N* ?6 D5 x (3) repeat $ w5 \( X5 a% l% j
<statement sequence1>;. ]3 r. i7 M7 W* y6 s- q v6 O& g6 `
until <condition>;) n% U, u9 q+ E+ I
(4) for <condition> to <condition> loop8 k7 P* P5 E D# e, U
<statement sequence1>;
1 v0 g* @7 g7 M% P, p( @( _( } next;7 k3 K2 q( ?- R. \. X' d/ U' N' d
3中断语句5 e r8 `1 t* e: b1 E; b& i5 p
waituntil <condition> prio <integer expression>; X4 c [; O+ x- F( P
. Z4 X8 U$ y4 V4 g0 G! b* }* Y, e6 @! m/ S& X/ p9 `" k' O% _
以上为常用的函数！2 z# |% V [- s+ r* r& L
还有很多，如有需要我把资料发到你邮箱里 ; i0 y+ N6 y0 e7 ?9 P% [* ^( G
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