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发表于 2012-11-13 08:48:12
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1判断语句$ T! p# F8 ]. E1 w
if <condition> then
! e) s$ R& b: d; w <statement sequence1>;5 O- }- U) J! n0 G3 ]# g* J C
elseif <condition> then
* o; x" J+ z% U: e7 }0 m* c <statement sequence2>;2 Y4 V/ i! ^; ^ C" i
else ' r. o& ~3 r+ w# Z5 y; `" R
<statement sequence3>;2 d( F' i P: K) N! t
end;' R* `9 \5 J/ }' K
如果分支比较多，用：
1 c% f& e) l2 ~8 a inspect <expression>5 G/ y+ L0 U2 E7 Q& P9 j9 X
when <constant_list> then& g5 @ ~: h" J" o- P/ \
<statement sequence1>;
0 T- Y, k% h, [! o3 r& s when <constant_list> then1 e, F, Z! L" A+ |
<statement sequence2>;
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else
! S/ z, e9 A9 f5 u7 @7 p <statement sequence3>;
/ q' q" O8 b( q' u! Uend;
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% w# w* W) B) c9 A: U h2循环语句$ y& Z7 a; u! z6 v( G
(1) from <statement sequence1>1 t! {/ y+ r! A& q; P5 N
until <condition> loop
& x# k- G2 g* h( M C9 ~ <statement sequence2>;3 q6 }5 E2 B+ A9 q( x3 Z" I! c: G$ T
end;
1 s% }7 l* k8 C, C& {- m" h (2) while <condition> loop
1 ?0 w+ Q+ r, {3 L v$ Z; Z0 _/ t <statement sequence1>;
) v, ~. N X1 e# g. N" | end;
* S" ^7 F3 w5 e7 ^% _" _ (3) repeat $ x' A) ?% w- ^1 u
<statement sequence1>;
) O1 ]3 h' r1 c3 V3 L. L until <condition>;
- P# I! ]9 ?+ }: u (4) for <condition> to <condition> loop
`1 T- h0 C6 D2 { <statement sequence1>;
+ f" ?% A) v; Y2 [* ?& V' P6 F next;
( R4 e0 q* i7 j; p0 d3中断语句: b" K. M" U7 P
waituntil <condition> prio <integer expression>;
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以上为常用的函数！1 o! R. B& A* Y/ N9 A
还有很多，如有需要我把资料发到你邮箱里 . O/ s2 v; Z3 ?& E& A( n [
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