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发表于 2012-11-13 08:48:12
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1判断语句( Y: t/ ?$ \7 ?
if <condition> then6 U6 s. R/ e; c7 L5 q
<statement sequence1>;2 I% ~# M* g& r
elseif <condition> then
: Q% o$ {) B- B7 Y: H1 [0 g <statement sequence2>;
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<statement sequence3>;
& R) t: `3 B& V; {2 ~3 ?1 n end;
" _. d2 m5 E3 u, \' @- b如果分支比较多，用：
0 E! ~* e$ ^2 | inspect <expression>
4 O2 Z) D8 b$ d( W- ^) e3 L! i when <constant_list> then
8 |9 ~, {: Z+ `" R <statement sequence1>;
; y P- a5 J( n8 Q, D3 v6 ] when <constant_list> then! g/ i# P% i: A" j4 X Z" y- d" ~% N
<statement sequence2>;
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else
2 u" g* p5 n8 M1 J5 C8 @ <statement sequence3>;
; g; [$ G5 Q* T3 X5 Eend;
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2循环语句/ k9 L3 a, I4 B" T& H0 G+ }
(1) from <statement sequence1>
9 r z& m+ [7 B0 X: r* M until <condition> loop* `, c% e% B4 v ^ [
<statement sequence2>;
% w0 n0 o- n: u* D7 P. a: y$ J7 ~3 ` end;
0 Z8 |" r, [' u' U1 i0 B (2) while <condition> loop
) ^8 I, l2 W7 _/ w <statement sequence1>;1 K+ }1 ?* B0 G+ b9 S
end;
/ i6 R2 k2 u8 w2 m6 \1 j- w (3) repeat " O+ E) u, k# y3 i
<statement sequence1>;
+ Q; H% d8 J/ M! b# c until <condition>;/ y" `9 S Y2 m6 i5 G/ L9 l
(4) for <condition> to <condition> loop
( N/ m5 {" r2 u' Y <statement sequence1>;; E( r( p$ j, M* J0 c4 b4 R A
next;5 n9 F, m# |& v9 _) @: ]0 A: ?( N+ s
3中断语句* x+ i/ v# D. T* ?9 G4 ^* _
waituntil <condition> prio <integer expression>;
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! v5 b- b. }! g: I$ ]以上为常用的函数！
8 X% N9 n; [ B+ r' v还有很多，如有需要我把资料发到你邮箱里
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