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发表于 2012-11-13 08:48:12
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1判断语句2 p: h7 ^% ?$ t
if <condition> then
, J/ F. T$ |' h+ C8 } <statement sequence1>;
. s. [" p7 A3 r% _ elseif <condition> then& A) ^7 V2 G4 R9 @+ `
<statement sequence2>;
/ `" ?0 j; m6 z$ e( P' Y else ; e' ]$ k* t" a! j
<statement sequence3>;7 `* ^; E. u2 H- v0 J" `
end;) d5 D, q* J, {1 G, E. Z$ F
如果分支比较多，用：1 d/ c6 W- M% [# e6 G( Q
inspect <expression>0 ]5 |9 S$ F: \1 }% i: k5 J
when <constant_list> then
# B1 ?! J# ~: ~' Y8 X <statement sequence1>;
3 M' S6 G( O( o when <constant_list> then" d5 [8 ]- g9 N
<statement sequence2>;1 C! }" W5 m% T1 B4 {* Y5 U
...1 X. H" V3 d" {+ Q! f; ~
else
% a! O: `& B2 `6 C4 L2 j& u! H3 m% ? <statement sequence3>;
: M s4 u* ~. c% j9 D( [end;% L+ e4 W @4 Y, P# ]4 B8 h
. [0 c5 r& p# }, x2循环语句. n1 m* h3 H8 X4 ~
(1) from <statement sequence1>
' g8 w5 r( p& W, f& ?: G+ x0 C until <condition> loop- _! j1 _# n R0 l# N1 v; I
<statement sequence2>;3 b O2 G/ u# Y s
end;
& z2 I$ K& X8 s% e% b5 c (2) while <condition> loop
; E8 |1 V+ X) W6 M <statement sequence1>;
- x, t5 ~' u5 ? Y end;
7 y3 l) f0 R9 {+ s7 ? (3) repeat ) F, u+ t+ g# {+ d( y2 M1 ` ]& t
<statement sequence1>;/ ^+ u; {# j$ N( M- G6 U
until <condition>;5 k# e% ?" N0 j7 T6 S
(4) for <condition> to <condition> loop
& C* R/ y, Z' O, x7 `: v! p <statement sequence1>;& X6 N2 e9 x' s" C/ |
next;
9 e# q. d, J+ Y0 l) W2 m7 l3中断语句
9 Q: e g: Z8 B waituntil <condition> prio <integer expression>;2 s2 l" i' M+ o$ Q# v9 @5 O9 |0 R
# W$ o& s/ G+ x
3 V% `6 L( A$ S3 y以上为常用的函数！
% g# ?0 P6 r6 h/ d还有很多，如有需要我把资料发到你邮箱里 $ C4 D5 Q }& ~8 M! R* ~" D
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