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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
+ G- o+ w% H P% Q if <condition> then0 n7 t; z6 C# I! @+ S
<statement sequence1>;/ I& q* k. W" v9 F0 Y& [
elseif <condition> then
" i! Y3 G8 I! o$ ?1 i7 G: v <statement sequence2>; }, R' n8 B8 M" k8 k- u, m9 p
else
, l- Q4 v3 f: u: l, p8 q- h( C <statement sequence3>;
" o* S; H' D8 A end;
2 l( n+ A- b6 N! x2 ?如果分支比较多,用:
9 ^) X8 ^' F+ z- |+ c inspect <expression>
. J, c6 z1 M* g) Y$ ] when <constant_list> then) {$ a9 u/ o! b" V
<statement sequence1>;% `3 C5 C6 x- d3 Y3 \$ [" K
when <constant_list> then
$ g! t8 d7 }' ^! u <statement sequence2>;
2 ^9 ` C. Z$ U) U7 a% a# |$ t" l ...
) ^, u! c1 g, ]$ |& D# G else
0 v }: w! k [ f+ e <statement sequence3>;
+ z$ A* r/ H2 Z. e' dend;0 m0 [, t" ^/ [0 E0 |. y
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2循环语句
`$ G1 a4 h5 L7 g) q (1) from <statement sequence1>
) e0 A4 Q& t0 S6 m3 H) H8 c until <condition> loop
+ X% J6 c8 f) J+ } <statement sequence2>;& E7 k* h6 l. Z$ I3 p Q) D' U, h1 ?
end;
# U) @5 L7 e0 D! P" k$ x8 H (2) while <condition> loop
5 n; y5 e5 V* D% l4 J <statement sequence1>;
3 s0 l- e8 G+ t Z |# M end;7 F) w, V/ c& n2 G
(3) repeat
6 A* u. U! R8 e, |6 C: A <statement sequence1>;9 ]( n6 W1 E( I" b* r8 {
until <condition>;
+ p$ N$ S) d8 {, k9 @ (4) for <condition> to <condition> loop
4 E+ j! r# U1 J: B0 Y# f <statement sequence1>;
) A% V1 _: F8 Q" p4 L, t next;
" \9 E; j8 i- b3 E5 R/ K3中断语句
! l0 n' N" W( O. i+ R( F: ^/ J waituntil <condition> prio <integer expression>;
3 R! v- @. [- c# Q4 \5 }! n; g+ G* V& E* K/ L: ]2 A
' I8 H& p8 k6 e0 G; h以上为常用的函数!
% H7 ^% |$ i: b' Q) [% o, P% x还有很多,如有需要我把资料发到你邮箱里
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