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发表于 2012-11-13 08:48:12
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1判断语句2 W, T$ N( Z, H3 Z
if <condition> then
, k. m9 @; t7 |' k! [) E N <statement sequence1>;3 x" z; z( {3 @! q- c3 X
elseif <condition> then
( h: ~. I, k9 L* C9 l: A <statement sequence2>;
, n0 N! A. H0 v5 z( j3 u else
! k E! l" j; \ ]+ K$ S4 M <statement sequence3>;8 U# [9 q* g* n
end;4 E- q: [6 b" k; W
如果分支比较多，用：
+ |- P& \: D) R. f# i( [ inspect <expression>9 c: i3 E- U: h& u5 y
when <constant_list> then
9 C2 |/ ]7 Z# u8 j/ x& u, t% Y6 f <statement sequence1>;( t1 f1 A- W$ p5 g/ z
when <constant_list> then+ Y% P) Y$ G& C0 @+ e) l
<statement sequence2>;
. G4 c+ j# F7 e1 d' [* J ...
+ q: }. c- _1 C, m& Q* Y, j else
$ p k; c" k6 }) ~8 t <statement sequence3>;+ x3 a4 a( P: J! \9 p$ ]5 f
end;8 `9 E' L, `4 K t d; {5 |- Y
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2循环语句
/ ~9 B! e! |; {" l (1) from <statement sequence1>
; v8 n( v @( z0 z5 P# X until <condition> loop; W3 [ L! \* A% I- W8 R3 u+ q
<statement sequence2>;
0 Y9 c( L# {8 D, y1 \* N6 ?: G end;
% d8 p: ^3 x) | (2) while <condition> loop
) n1 \; A2 G) p' b <statement sequence1>; @. E- A A2 L3 N& a2 L) b
end;
( x2 `/ Q0 r7 J1 U7 E (3) repeat
( h9 u& C. U! F+ W! n3 D7 y% [ <statement sequence1>;
& l2 w/ } X! x! e until <condition>;0 w; m3 a6 ?5 `8 m. @' |. }) L0 t; E
(4) for <condition> to <condition> loop! A9 a6 b' I( M5 ^1 {% T' f
<statement sequence1>;
# B7 I A2 C; @' Z' S& M. g next;
+ v: h- ?5 n y! |- ~* w3中断语句
$ f# S: W$ n3 A waituntil <condition> prio <integer expression>;/ p" Q+ |- B! J
+ u* Z0 s- M: w
. B; c" _% B) C- P! ]* }以上为常用的函数！
# n9 _% y; s. P% c% C6 x还有很多，如有需要我把资料发到你邮箱里 * i% u% v4 ]' Z4 M
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