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发表于 2012-11-13 08:48:12
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1判断语句+ [+ U: ~) @$ r" Z* \" `' q) G3 A
if <condition> then4 {% I. V1 Z3 Y r; p0 Q
<statement sequence1>;
8 \% t) s5 f/ e1 f elseif <condition> then
2 m- g& g0 _" O/ A* l6 a <statement sequence2>;
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<statement sequence3>;9 N" P3 J6 {4 @" Y
end;0 v, I; j* u" v9 }! F) Z3 H9 C2 j
如果分支比较多,用:
6 K: V' S9 t: d$ \9 O/ }) d inspect <expression>& L! E/ @# n8 z J
when <constant_list> then
* P/ s5 c* o% [1 ?, r( { <statement sequence1>;/ S! f; S3 b+ O& U
when <constant_list> then) _# [( l" a& i$ W' L1 F
<statement sequence2>;
0 t ?8 Q3 a# T4 f7 G' H& I ...
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<statement sequence3>;
I/ U+ K2 o/ [2 J) M1 r1 Mend;
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& {7 `3 L; K' U& f2循环语句
" \7 p- a3 B0 r1 Z% `0 E (1) from <statement sequence1>; {& n4 ^+ d; o- K& U8 J
until <condition> loop
. E5 v: o% o, G: _5 T$ c <statement sequence2>;
; q) P" {0 Q8 C' r/ X end;+ ~: W4 K: e2 d d b3 h( o+ p7 _$ {
(2) while <condition> loop! k/ ^8 m8 s! d; H: R1 i
<statement sequence1>;
2 Y/ g6 I: _' K9 ]# W0 G end;' i2 f* Y- s8 D, [$ S) w
(3) repeat
% V; T! e5 A; l a& A; `0 g <statement sequence1>;
& e$ Z( y- |# f9 E2 P until <condition>;/ V g5 q# ~5 n6 z( H' d
(4) for <condition> to <condition> loop
( p M" U3 ~! T <statement sequence1>;
( H' P# Z L# r. J9 P: } next;
& w, `9 U1 n5 P1 u$ f3中断语句
' n7 M8 q5 j) N" L# Q p) T" G& [ W, B waituntil <condition> prio <integer expression>;
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$ O1 x; b4 H6 @5 u以上为常用的函数!: t. B/ V! x$ W1 W& y$ H
还有很多,如有需要我把资料发到你邮箱里 3 J2 R6 q9 X P2 j, M, F7 T
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