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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
* B5 J; o9 P# r if <condition> then1 P/ d% d, H. U* d0 `: y9 \
<statement sequence1>;
# `3 P9 g; O* p; V) U elseif <condition> then! P, n0 w p9 C, p; M$ i$ ]
<statement sequence2>;
$ V& f# u, A' D6 H A, y else ! D# d: ~* `9 f* H4 s6 l
<statement sequence3>;
, C7 {7 a3 m% y5 E/ b% o& n end;% Q1 H; t" Q5 Q, P' b! ^) x5 h
如果分支比较多，用：) K4 a5 H* r, B- s8 h
inspect <expression>0 q9 }5 x/ B( ?, {
when <constant_list> then4 p; E7 Q( O- m
<statement sequence1>;& _8 G0 I" H. Y( I
when <constant_list> then
; h5 O/ r2 t7 t <statement sequence2>;
% t( ~+ K# _! ?$ R/ E7 z ...
! f7 ~; ~3 F' t* D0 l; b0 Q else
- E. ?; l9 m. q$ u' S8 ]6 X8 y <statement sequence3>;' E# t7 Q. j! E- D
end;' r1 l F8 T2 v$ Y5 c6 r: D
# q) b# T0 ^$ z6 w2 {
2循环语句
( m5 e+ @8 X' w* L (1) from <statement sequence1>
3 g( y& O( l- F; a4 x until <condition> loop! `" [% ~' ]7 O8 H1 U# G6 v
<statement sequence2>;
0 |) d& V( A& X* L, D end;/ c: v2 f7 p8 A& R- u# k7 K! s
(2) while <condition> loop$ I1 r% A/ t( B* S
<statement sequence1>;
/ d" u- U) x( \ end;
6 ~7 q# V/ Q8 D8 g; h0 x (3) repeat O- ]5 L$ I( i6 u' z/ [" Z
<statement sequence1>;1 k/ a: S+ P- S; l+ m5 g
until <condition>;' t, [$ a4 U7 c* d2 o% b
(4) for <condition> to <condition> loop
& J' Z' z) o# a0 @" w3 n) _$ T <statement sequence1>; t' @3 P/ U1 Z
next;
0 F" r& Y& L% {! m3中断语句
+ `; f5 c- w5 @7 B" A9 ? waituntil <condition> prio <integer expression>;+ m$ X( P: B0 _2 o. N
3 U( I+ F0 d+ X! Q2 T
0 |+ m! @ Y% R Z9 w4 V u以上为常用的函数！
- r1 W+ S+ b6 ?3 K" I还有很多，如有需要我把资料发到你邮箱里 ) y( f3 q- p( {% G8 a
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