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发表于 2012-11-13 08:48:12
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1判断语句- Q6 K3 a$ M# z4 W
if <condition> then' [+ v5 F& G, \, c/ s0 B {
<statement sequence1>;
+ t2 k, F% s% k/ A% `: M elseif <condition> then
' r- @. `" @1 i! i <statement sequence2>;
" H2 W8 v5 A/ o" n, E else 7 g! e+ \& Y& k8 P
<statement sequence3>;* u, S3 L/ D5 a
end;
# {/ u3 D$ l9 V+ A$ ]如果分支比较多，用：
9 M4 B5 K! R2 {& ^4 D7 Q0 i, H inspect <expression>
2 V8 [: Y) l) D: @ when <constant_list> then7 r, q7 ~/ F6 U. e1 x1 ^
<statement sequence1>;
' n# r @+ Q, J$ X( m when <constant_list> then+ A3 z, H; G% B
<statement sequence2>; O8 W+ P* u, f2 x% b
...
" m4 y' ~" T; ?# j else
g9 |5 T. O2 @+ p <statement sequence3>;4 _1 N6 p: n# @. s! A$ X
end;
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2循环语句: ?3 J" y6 X% y
(1) from <statement sequence1>
$ l4 F* v! j& a7 I: q2 G5 D1 d until <condition> loop, k$ Z) V$ K; J& b4 J1 e; k
<statement sequence2>;
' k# }$ Z% p* B# R$ {3 [9 {/ ~ end;
5 Y" r! a- W7 p! p" q. ` (2) while <condition> loop
2 [% g9 ]5 G8 b' R$ f8 ~/ n <statement sequence1>;7 I( L) e: U5 n, |) F( H
end;% R; Y, p' X- d4 \$ K3 z
(3) repeat
2 l3 k$ b' ]% U7 H2 p$ _ <statement sequence1>;7 @7 |6 ?% N$ r. h/ S
until <condition>;
6 `8 F) u2 u4 u (4) for <condition> to <condition> loop
- V, z4 D" J6 i0 V M W <statement sequence1>;
" x& V, w+ b0 G; ` next;
8 a# A7 e m4 u" v5 D/ Q3中断语句
% |. l7 I, |1 d/ x waituntil <condition> prio <integer expression>;7 F( l2 M! |( N. f
: O) v) N0 @' I3 d
9 ]+ o& \2 Z" ?+ ^/ A$ j3 g7 n* G' |以上为常用的函数！
" a' f0 u. {4 ]/ c还有很多，如有需要我把资料发到你邮箱里 2 I5 Q1 Y1 z& K& d) y U
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