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发表于 2012-11-13 08:48:12
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1判断语句+ F2 X* N4 f Q
if <condition> then
) Y9 q/ M9 |# @! ^: x <statement sequence1>;
: Y& E$ B) {* W5 Y0 y6 G3 I/ I elseif <condition> then
, U: M+ o/ V8 o; q. M <statement sequence2>;
* n0 d3 s* x. |/ ` L' Z3 q& A else 0 s. G, q4 W: a6 Y
<statement sequence3>;
% {& V% a! I/ [' j$ O end;
1 X+ R8 o0 F: d9 u+ l% y如果分支比较多，用：; f* t- M) a: v7 Y. d5 e) Y
inspect <expression>
E( \- M6 B4 S* Z( Y when <constant_list> then# y5 }* V0 S9 n( `9 L# @1 n
<statement sequence1>;
4 [9 m: }" W2 Q! l" t' M) H' ] when <constant_list> then
6 U, i5 ]* M8 d2 Z: q9 {& D+ l <statement sequence2>;8 Y+ R' ]4 C$ g$ N0 C4 N
...
5 V1 p9 C' I4 ^) |$ b# ~2 Q( `+ ` else
4 q: D5 Q& j8 G <statement sequence3>;
2 w) l4 [1 D0 g" K9 F% @% d9 pend;! O2 |# f$ u" g. N" ?
$ o) w$ o( ^; J7 o! g5 L5 Z2循环语句1 v0 U) f) ?- V- E3 H' H4 H( o
(1) from <statement sequence1>9 g* s# T6 e7 A: g! i1 e
until <condition> loop
7 e& G' g. ]9 M, V L <statement sequence2>;# Z( _9 n3 f; K$ ?
end;+ g0 v5 O$ L1 \+ }8 N/ }
(2) while <condition> loop
3 m; Q+ F$ l0 y$ ^+ P <statement sequence1>;
: u% Y/ `4 U- _ end;
" j% v$ ]+ y/ C+ `! F (3) repeat
9 s9 J, l; f# g+ E <statement sequence1>;9 J' h) ?% I* e) S& m
until <condition>;
( e# c4 E1 e2 F* Y (4) for <condition> to <condition> loop
. ]8 p+ N- ~. E, |8 T/ p' m" R <statement sequence1>;
4 ]) F/ z) H" T9 f- I( g6 i- Q next;
: `3 W5 C6 [. E4 N+ K% u3中断语句
6 v& {9 D. a9 w' F* g8 G8 F waituntil <condition> prio <integer expression>;9 e9 D* H+ x9 c3 `5 i4 _' f
; p( p7 _5 \8 J7 ?
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以上为常用的函数！* F0 M' A- i3 T8 b# R' Q' R
还有很多，如有需要我把资料发到你邮箱里 7 @& O7 n& M8 w
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