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发表于 2012-11-13 08:48:12
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1判断语句
: N, I# R% E/ O g if <condition> then
0 K! {5 I& P, v$ A Z A <statement sequence1>;
* l S' J1 S6 O8 O3 V3 G elseif <condition> then
5 d$ v# r5 m' [ <statement sequence2>;
6 t/ ]% l$ y2 F, W' n0 j$ g6 j else 5 R" K8 g% L- `6 k8 U
<statement sequence3>;
+ F7 a( U* l- ?* w r. S7 w end;- l2 g9 h$ x: }" r" U* L, {/ D
如果分支比较多，用：# d4 z, m1 v4 ?: i6 l
inspect <expression>- q5 i# f+ D2 r6 }) @
when <constant_list> then
% a+ `: Y0 _4 B r' G <statement sequence1>;6 m8 D _) n, v1 f$ g- W
when <constant_list> then
. y# w5 |5 F$ o! ]* a <statement sequence2>;. Y) l I/ _4 t- Q) C
...: ^7 l2 \4 Q" b
else% P7 Y! j+ v9 T8 e' d
<statement sequence3>;
6 u; _/ n, }& c$ zend;4 Z; ]3 {. @: ?0 M, k0 f1 e4 ]
1 k3 R1 e% Q* D. |2循环语句
0 q1 r& I- c& b* y1 }% x: o8 } (1) from <statement sequence1>. m# k% f- k7 @( w% |
until <condition> loop
8 a) V- I1 x9 a3 H1 A4 j9 v <statement sequence2>;- R% n% K/ D) V: p
end; h2 a* |$ M/ F7 ]& J3 L
(2) while <condition> loop! N4 Y$ N, ?9 P, P* ^0 i9 o* {
<statement sequence1>;
" P W J1 L& d+ f2 c) Q end;! h" P3 m1 U4 L% y
(3) repeat
$ P o& E, g6 l' r9 C! R( K <statement sequence1>;
% }7 c/ a0 Z, X4 @) z* l until <condition>;
" ?: h8 s! C2 I+ p+ F" [# t (4) for <condition> to <condition> loop& {/ R t5 p2 C7 W
<statement sequence1>;
! X) E6 x: J9 L, l4 @7 Y: `# R6 I next;
4 F; b$ |( V& j8 q: }; ?3中断语句
* f) k) s; T3 m7 X+ p) A/ P waituntil <condition> prio <integer expression>;& Q; V* U6 O3 b, y+ z$ `$ Y9 l* z
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以上为常用的函数！9 r0 C c" L" y" w; i( ]1 \/ a
还有很多，如有需要我把资料发到你邮箱里 : q+ x+ l2 ?. C7 g6 n9 d6 z
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