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发表于 2012-11-13 08:48:12
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1判断语句
1 j: z( F9 E5 e4 b if <condition> then# D. F6 L* K) B3 a* h% ^& P9 P
<statement sequence1>;" \& `7 c7 l7 r; k
elseif <condition> then
; i6 D' b- S( n) ]# O9 d- \- i& Y# `$ U <statement sequence2>;/ c0 ?1 ~- j% F8 v% F- }4 S
else
0 T+ Z \+ w( _: n4 }- i% L <statement sequence3>;
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如果分支比较多，用：
; V3 p& _- N. s% H- d+ B( P" t4 ` inspect <expression>
" i3 N# Q/ C& Y when <constant_list> then: ?7 `; u/ F% {
<statement sequence1>;; ]+ t* H, U8 T% ~& }
when <constant_list> then* d Q7 }( J$ v* u% i
<statement sequence2>;/ Z2 o$ s* S1 r( S2 b2 t, A! x
...
4 i/ h& g4 C. C0 {% q( ? else
4 Q. c' O5 ]. j0 p$ j0 e* r6 R <statement sequence3>;
( `7 M1 F ]8 {6 e4 }2 B' tend;
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2循环语句( a8 x1 B. i& Q! c" q
(1) from <statement sequence1>
2 T1 L* ^9 `, c4 K until <condition> loop
" O6 |$ q" c" k4 k/ V n8 c <statement sequence2>;6 r" g% ]( W7 P: L5 Z/ z. o; H
end;
8 s4 F9 `% ^) v3 O. P (2) while <condition> loop
2 i9 _* ~( K: M <statement sequence1>;' O# K! ?# w1 ]7 ?
end;
) c. H! j; r. g+ d2 e' g" M1 P; C (3) repeat : L4 M4 ]$ s4 M+ L ~- R( b
<statement sequence1>;
5 g( J+ p6 M: |5 l% c until <condition>;
) p9 H( `/ Z+ M& ]3 H. S (4) for <condition> to <condition> loop
' W$ B5 ]0 f; q* j* V" w3 F2 e- E <statement sequence1>;! ^: r% `$ ]. a0 _& O( B5 B1 d/ C
next;
* _! S3 X, e+ F4 `4 j( B8 G3中断语句
0 P+ k+ @' n# v& K. [# Y3 U0 @ waituntil <condition> prio <integer expression>;
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: v9 K: D+ x0 P$ S$ s1 T8 H以上为常用的函数！
# r% c1 g2 h; i d- ^还有很多，如有需要我把资料发到你邮箱里
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