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发表于 2012-11-13 08:48:12
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1判断语句
9 F" D* J+ [0 Y& j if <condition> then5 J2 Q2 n7 A1 U( B9 F- P
<statement sequence1>;% J9 M' Q) }5 [& k/ L) [
elseif <condition> then* G+ T5 b- A) M% g
<statement sequence2>;
% [$ s: b, [) D) r1 B& j else
6 W0 \0 r/ D% y, b <statement sequence3>;% O# j. M7 K* Y9 `9 S9 x* w
end;
t. G0 S; A) O, `0 B% { i4 N如果分支比较多，用：
* o" ^/ W8 u4 A' ~2 i inspect <expression>8 }9 x) S) ?; k- W
when <constant_list> then
- \' g' L/ Y. H) m% { <statement sequence1>;
0 q. q; l* h& d# X7 t" _ when <constant_list> then; d9 m- u! J. U
<statement sequence2>;
0 c O1 j+ U* @. O. q ...
. p& y+ h* p2 L0 e else
$ c' u U; L+ ^8 a; ~3 J/ c <statement sequence3>;
" L2 P5 x) C3 Cend;
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( M o$ N; X+ `, j4 E6 K8 {2循环语句
3 F5 J1 k* o& l/ Y( l (1) from <statement sequence1>9 g: f% K0 P! j# S. H
until <condition> loop
! M2 m' E8 F0 H8 z0 r& m a3 a <statement sequence2>;
9 l- K% r I' D1 Y: W end;& j$ k; g0 q& R3 ]! y
(2) while <condition> loop
' r6 @0 p6 f% P2 c7 v5 M& z <statement sequence1>;
" q: n' k5 `# q end;
" ~5 K5 J0 {& l: o4 O (3) repeat & M: h# k9 B. z6 K# j- n
<statement sequence1>;9 w$ \- @7 i1 Z
until <condition>;
8 u8 M- ]; P0 @% R l& g (4) for <condition> to <condition> loop- f- e" _ W% C3 i1 |/ y
<statement sequence1>;
' P7 q. f1 ^% y* c { next;
5 g, `! J4 ]! M3中断语句
e+ ~! t& v8 z+ C, E2 f waituntil <condition> prio <integer expression>;
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, i6 a0 X- j _; J以上为常用的函数！
E& @0 s |! @( d* U* c9 H还有很多，如有需要我把资料发到你邮箱里 / R$ S W" ~+ [( H! _& z
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