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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
+ N# y Y9 O5 S, o3 f: |+ c* d if <condition> then- Q/ h0 ^: {* U+ q) Q7 i/ K+ R' D- M
<statement sequence1>; R0 g- N. o, b( t& D
elseif <condition> then
" `$ D" |& r7 E$ w; M X <statement sequence2>;6 {1 s- m; x0 p4 I) t
else ) j" ]# Y; h9 B2 z' O+ }% Z+ U
<statement sequence3>;% g% X- k7 m) _8 J g2 s
end;/ S. `. e/ J7 d" v
如果分支比较多，用：
( ]! h" h; H5 H- r( U9 g3 p. k inspect <expression>- Y9 u& Q$ s9 {
when <constant_list> then
! d7 I- b9 _% Z) y& }4 e <statement sequence1>;
3 o. O% W9 y, z# F l) S' C when <constant_list> then
/ F, f6 ?2 d/ L1 m z, z' g# D3 J <statement sequence2>;- j; ^$ G7 K; k3 o6 I6 i1 s; j
...
" v6 @% K- }4 |% D5 B `" l1 b else
, [1 p" B z `* O* W" S <statement sequence3>;% L T1 j& V0 C, x, o; h
end;2 Y) v* A& t" j- [/ o9 B+ C7 U
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2循环语句
2 _' |2 A E2 S0 o (1) from <statement sequence1>$ r |1 i. h2 k; \- m4 N
until <condition> loop$ ~* _- _4 _6 m) j0 A
<statement sequence2>;7 N: b# Z9 q2 e) }5 O3 n* n. P4 N$ h
end;
. o, l* L1 d. y1 `: V" F9 T- N (2) while <condition> loop
* C8 w' ]( J' f" S7 \- ?" B <statement sequence1>;9 ~0 n% R* k3 t! \& Z
end; k% L! x3 N, e- d. R6 Z( [3 ]4 S5 Q
(3) repeat : ^7 {9 }/ |8 b
<statement sequence1>;" K( I! q# E6 X& n* E3 M4 S$ f
until <condition>;
# y3 p1 [0 S3 f2 i (4) for <condition> to <condition> loop
" E0 Z7 J$ r+ ^2 I) B <statement sequence1>;# G+ P% Q# A `/ _& D% H: q
next;( X6 V' V1 c: D! v2 d. W% ]1 H
3中断语句9 W( f% Y5 G* r! z8 J4 h
waituntil <condition> prio <integer expression>;
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( j2 O' X$ S3 n* o以上为常用的函数！
& l# r$ Y" w3 o ~ Z% l% U* i3 d还有很多，如有需要我把资料发到你邮箱里 ) H) ^: F2 P; g0 d
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