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发表于 2012-11-13 08:48:12
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1判断语句
, C$ M& ?) _) k! S$ K. `8 F# L/ B% k if <condition> then; ]$ M/ d2 b6 u- s2 y( j
<statement sequence1>;8 P0 P/ s8 A5 d
elseif <condition> then) N- o1 y. v# G7 {3 o
<statement sequence2>;
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) d. D9 P6 g& ^, y1 ]" z <statement sequence3>;
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如果分支比较多，用：
* K3 }& c2 t/ j% c% e6 G inspect <expression>
, Z" n" P1 `4 H; Y1 P4 j0 t when <constant_list> then
" ~: _. S* C2 m5 k4 x$ o) d' R <statement sequence1>;: I: p- O2 \8 }9 @8 ?/ g
when <constant_list> then) Q+ P6 y1 e2 U5 }
<statement sequence2>;3 A) M4 I0 V2 [ @
...
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<statement sequence3>;
+ _4 Z6 [$ ]% m8 p+ W0 {end;
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% H# z7 w0 J5 y; q# K z9 y2循环语句
( r3 g3 K: y0 I6 R# [ (1) from <statement sequence1>; \& j( X& |8 r( ?! Y7 H* [* M
until <condition> loop _2 v, o! m3 \7 _
<statement sequence2>;
3 W. ~1 u- F5 g6 H5 b7 X end;/ E, W0 b- F) a- j$ u( P
(2) while <condition> loop
% d4 e. H0 G- Q. q5 c" z <statement sequence1>;' u7 l4 A3 p( H5 e8 ~, P7 P
end;
% \9 o4 W9 q, O5 |2 i+ b (3) repeat
" X* V9 g: p6 M <statement sequence1>;
/ N( Z5 h9 y5 o8 Y until <condition>;6 z: I3 B$ e* f* T* x# {
(4) for <condition> to <condition> loop$ U: V% ~6 v8 H
<statement sequence1>;8 m$ a$ g! }' v
next;7 g( W% p6 a. y; Z
3中断语句. s1 K+ a& b" V5 d3 v5 L" F0 l2 {
waituntil <condition> prio <integer expression>;! j& C* H M _0 b3 |
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以上为常用的函数！+ B8 d* P! N! ?. c" X8 z
还有很多，如有需要我把资料发到你邮箱里 d: |5 E9 N% j& C* w9 p
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