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发表于 2012-11-13 08:48:12
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1判断语句
. f3 k- k% W( u3 _6 }" C6 K! ?6 L2 A if <condition> then% H6 \' t+ B- p* W6 N
<statement sequence1>;
8 j/ V: w5 R) M, y! A/ O elseif <condition> then
7 b) q- E$ i' v, E* { <statement sequence2>;
# D, p* X5 V0 D else 0 q k( {# T, u# q1 _
<statement sequence3>;) @( f: ^ L# Z8 F9 _
end;/ v2 e3 r2 v. n+ E
如果分支比较多，用：
% @( R0 Y1 k+ e inspect <expression>6 `) p) {$ y0 D
when <constant_list> then3 O; T9 w9 R8 P' x4 P
<statement sequence1>;8 d& S" O3 j3 Y& I, \
when <constant_list> then6 T" X$ i/ ]+ C3 Q2 U$ l2 ], p* @
<statement sequence2>;
' F4 ~; X' P2 I$ C ...
8 k/ x T" @/ x- N5 _; Z else
" M5 Q% L( g' z9 I) O o! Z- y <statement sequence3>;
: f9 B* d6 X2 kend;2 @/ ~, p- b) j/ l
0 S) R1 k; C }/ V- s2循环语句 V# u2 b/ S1 T. F, w7 |; |
(1) from <statement sequence1>
8 l; [6 C; X* N: P7 F until <condition> loop) h/ o0 r1 A1 q, O7 d
<statement sequence2>;
( t5 t( p$ e5 T2 ~7 P$ w; ` end;' ]" s: k9 z2 x; z$ T8 V. a
(2) while <condition> loop2 l% v! K w f+ q+ |
<statement sequence1>;
6 ?! E% u* V h. ` end;
$ V. X5 a: }4 ?6 v+ Z0 r (3) repeat
# R1 x- u0 K( c, r, ^1 q& e7 S+ a <statement sequence1>;7 h; y; P6 T; M5 J# A( P* x/ T
until <condition>;
1 \) t' p4 _1 Q' ~: h: s' W$ f k (4) for <condition> to <condition> loop6 R) T; v# M* r# E+ I0 D6 A! G, S6 }
<statement sequence1>;* Y9 K/ C L- t; G! [
next;+ B; `) y1 ?# A! f. S$ F. j, d- u: e
3中断语句
2 \( ~/ z9 u6 i" j& m3 g! l8 E waituntil <condition> prio <integer expression>;% v7 \6 A% | N
) @2 p1 F- p5 m- ]/ e* ^: Z D+ d; C) r$ w0 F+ h- a
以上为常用的函数！ j1 W: R" `0 S ], o% Y. A
还有很多，如有需要我把资料发到你邮箱里
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