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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
4 K. E) m8 b' D% Y2 ]4 e. B! i if <condition> then
7 b% v- I3 _. w } X0 R <statement sequence1>;
1 B( k- G: F: _* _! Z0 @ elseif <condition> then
6 U6 p3 H, W9 \: M7 Z+ e u <statement sequence2>;
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<statement sequence3>;
, I) l) ?; i! }" O1 X3 E end;* S# v8 y( E) a
如果分支比较多,用:
5 k7 O7 U- z5 a( ` inspect <expression>* f& W' Y. y& m% z
when <constant_list> then
! f, c) w, h- Z6 ]# U7 ]8 Y m <statement sequence1>;& Y* r+ P2 Z) i0 J/ \4 F& W* @
when <constant_list> then
3 F8 D: n4 D: A& @( [! b1 B <statement sequence2>;
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else
' ]' j6 ~! g P: Q4 F3 N <statement sequence3>;
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2循环语句
* Y! j% D* t6 d2 p! s n& ]4 w$ x- Z" P (1) from <statement sequence1>( f8 s$ \1 W/ K
until <condition> loop9 C/ q0 F8 w! |5 a& j/ F& r6 I
<statement sequence2>;
+ C: H+ r+ E o @6 l& c; D end;
1 C& H, E$ g* ?6 z8 \. x (2) while <condition> loop
/ Z0 T# a) _% W: \ <statement sequence1>;
6 |1 O7 `/ F- n end;
% A/ j3 E4 U4 k/ u& k (3) repeat
) ^0 z+ Y2 X5 A; V: Z <statement sequence1>;
% V9 i1 K. ^0 ?$ c+ [ I until <condition>;0 T- |2 {0 T5 L0 E3 C
(4) for <condition> to <condition> loop1 J/ N# Y5 a( ^4 A! n. u! `4 m- H. E
<statement sequence1>;1 {9 {( W T/ \) \( W
next;' ]/ Y- Y* p: v; U4 U- d/ ?- b- n
3中断语句" w/ _9 {2 u3 a. c! A' V3 G
waituntil <condition> prio <integer expression>;- @3 q4 r. o0 s, i4 l6 p
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& ]4 f8 L3 h& H; \以上为常用的函数!0 j" y9 l: ^$ T, _2 @
还有很多,如有需要我把资料发到你邮箱里 # y+ u& \6 G3 U3 N4 |% w/ d
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