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发表于 2012-11-13 08:48:12
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1判断语句3 r. c+ x m0 t8 j/ }! F" ]
if <condition> then
1 |3 ~2 Z. [# n% b# C* c <statement sequence1>;6 _) f. u1 j8 p& T
elseif <condition> then1 \3 k$ i& h: V: G
<statement sequence2>;
: |6 V% d# _: [: ~2 G( Z$ ~ else 8 J8 u$ J$ c# @/ l2 Q0 R) i
<statement sequence3>;
) B9 @# f0 D& t: t6 ~* R end;
/ g, W( M5 |. _6 {- B如果分支比较多，用：
& f9 \7 ?9 S/ _ inspect <expression>8 k# N+ o6 w1 d
when <constant_list> then
+ F6 k3 A" g! }$ T& l <statement sequence1>;
8 s! h( j" {7 O: ?) g when <constant_list> then
& {5 T# w4 c. f, ~' v3 C+ g$ H <statement sequence2>;
C8 K @, c. W9 R6 l4 Z0 \7 L6 f ...
& }2 ?( Q. V0 G5 Q- `: D else
( x/ z) @+ _( [/ L/ O <statement sequence3>;
3 d, P: ]2 Y8 O/ \end;
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) H' B p, _7 J( ]6 e2循环语句, ]1 A1 ]: _0 l& x: _9 m0 S. _
(1) from <statement sequence1>( R% }/ W4 N _. U( ^
until <condition> loop, F# O% j4 {& G
<statement sequence2>;
; r7 g# b% p- g% s) x8 I end;4 R' L) f$ I: y+ V/ \2 d, M
(2) while <condition> loop& m( R& K+ m4 I
<statement sequence1>;
) V4 q5 i- M2 J& ?! c, s end;
2 d: e( T" t' j. u (3) repeat 6 b' t) K1 k& w1 A5 Y6 c6 Y
<statement sequence1>;& M! b p/ A" ^5 r/ f
until <condition>;
' ]: Z4 d5 ` l (4) for <condition> to <condition> loop
% d3 m7 p$ m- n* V+ ^/ i <statement sequence1>;
3 M: A3 e0 Q( n next;
, D1 u) a/ ?. e. Z3中断语句
: e L' r9 t) P( O. q( s waituntil <condition> prio <integer expression>;1 A% Y8 h) o6 T: e4 D; K$ T
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以上为常用的函数！
w; V$ Z2 F2 L" O还有很多，如有需要我把资料发到你邮箱里 8 G+ v2 ]' m0 u* w# k: [% U
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