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发表于 2012-11-13 08:48:12
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1判断语句
0 v. J+ z$ Q) F/ E+ A if <condition> then
1 S8 c0 r1 P% _, l <statement sequence1>;" v8 M8 Q6 X+ ~* M( A. h
elseif <condition> then4 {: Y6 ]( ?( ]
<statement sequence2>;3 c0 I$ V1 \9 C1 X# W
else
% H! {# H* } U9 c <statement sequence3>;
6 M! B$ l' _# j6 u. {+ r7 |6 x6 G end;
C! j! `4 t: c! A) L8 K& `4 l如果分支比较多,用:0 M; ^7 J3 a- K0 `% }
inspect <expression>
& y! u5 {( w6 H% j: g7 ? when <constant_list> then' f; g, W: w8 s! F5 F
<statement sequence1>;
+ C% i5 Z$ z4 M" I4 q. U' w6 ~ when <constant_list> then
! w( t. ^' r0 P6 `+ O' f: h5 ~ <statement sequence2>;
: t) B* j8 n+ @: c$ ~* S ...
6 y9 P& D+ O$ Y4 _ else
1 A& |" ~' D0 J/ {. M- W <statement sequence3>;) m* E4 N% j6 X1 q! C
end;, F- R2 n, V; }9 y
* _2 Q* ]8 c) T0 u4 [2循环语句
7 k. U8 q" a) T0 f# M/ c (1) from <statement sequence1>
7 W0 Q: N7 a& N" l until <condition> loop
( d5 d1 s9 l/ Y# h0 d' n2 s <statement sequence2>;9 E( w! ~/ X3 P. S, l( }8 m$ ~" X3 ]
end;6 u& I( j! w* h; b8 ~' }
(2) while <condition> loop
, c2 O) B7 _4 b) A* t+ h! k { <statement sequence1>;
0 Z. d' f9 C9 P% i8 G8 h3 k end;
# d; q" @$ e. j4 x2 ?4 r (3) repeat # t7 Y1 l' {) m$ P+ \& j" B
<statement sequence1>;! ~# M3 M/ Z3 F9 `
until <condition>;
; H8 `" B: z! ] { (4) for <condition> to <condition> loop
2 _0 ]. g0 h4 M. Q9 v" B9 x9 @ <statement sequence1>;
. q7 b3 D! }4 I( C* ~ next;
" r" M2 d% L1 f* e9 z2 ~3中断语句+ R$ J& W% a# p% d# }
waituntil <condition> prio <integer expression>;" L3 r1 T3 M5 {) ?( ~/ m- J% B
. d: y& h, n# g# ~' s! O
% e3 S" N. n0 F# o: J1 i3 |3 S! O7 r以上为常用的函数!3 C( ?1 S' G2 c& N, l% ~' l
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