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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
: s. A4 O( |' H, r3 S if <condition> then4 ~2 i# w) [% @( g
<statement sequence1>;
4 s6 c5 c) G0 u; ]5 c% q elseif <condition> then% {; \5 M" R3 |
<statement sequence2>; o. l( s- A" M% E
else
( y9 {" B4 K! p" { O% K7 N <statement sequence3>;5 s5 i7 N9 j) U! r4 K( x
end;# N Y# p$ v; E( H" ]9 Q
如果分支比较多,用:
- s' ^8 d z6 _, H8 w inspect <expression>% {; _8 T2 e V, I" U
when <constant_list> then
: |( y( Z" M7 v0 N% m% @ <statement sequence1>;
4 h( \$ u9 y% ?1 D4 |# F% V when <constant_list> then
8 P8 r, r' r' N" z. w; T. L9 `% U1 n <statement sequence2>;: m- W: T* e, s- K* ]7 c, m% m t
...: f6 s0 m+ N! D$ p- o, J% X- S
else
6 b6 A C* L( v6 U. A2 X* P. z s9 V <statement sequence3>;6 Q0 E2 k3 \) W3 {/ E
end;
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2循环语句4 q! O% z w b
(1) from <statement sequence1>
( g3 ]( }' h9 ^9 k2 t until <condition> loop- ~+ ^ f" |' o/ G$ [2 m/ h Q
<statement sequence2>;
- {( M# D3 Q" `5 G& ?- s% | end;( K' }' Y6 X+ ^# G5 H7 ]
(2) while <condition> loop6 x- M5 O2 ]. X+ v& i
<statement sequence1>;
6 ~4 v* S5 ^. O# i- `( q1 K; ` end;" c7 x, ^# e8 A* M
(3) repeat
2 F7 h/ _ h6 @0 g' }4 ]( z, G <statement sequence1>;
% z+ o6 {! F! j% Z4 d until <condition>;0 b$ B! @) a x5 C% n+ h
(4) for <condition> to <condition> loop
* E! e7 j y& D# q" o' e <statement sequence1>;9 N ], T6 F4 H, F8 A
next;, M" w" _* ]4 I
3中断语句
8 I$ n A; g! g/ o9 M% A& _ waituntil <condition> prio <integer expression>;
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" k9 l5 \) P* M7 T" x$ u+ G/ v以上为常用的函数!" z6 H* O0 B) p. O0 P
还有很多,如有需要我把资料发到你邮箱里
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