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发表于 2012-11-13 08:48:12
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1判断语句7 ` H5 T4 \' t- c; }+ F5 r
if <condition> then
8 `; q) p6 L( {; R8 \, _2 D, G <statement sequence1>;& n* ]0 F m$ E& d+ K
elseif <condition> then. F0 F+ z( g" x4 H* A7 b
<statement sequence2>; w" J- Q' @/ p. d5 z% T
else
5 @" J6 q( {6 N) x0 W K <statement sequence3>;
2 e6 o4 x& p3 L) K# a2 | end;. v* G2 a/ S7 J& r2 q! e6 {9 q
如果分支比较多，用：
! J- r) Z- W+ Y: z8 ^* P1 y inspect <expression>
+ M8 b" _1 Z- x$ A" x. g% } when <constant_list> then+ [) K; H" A) m7 W& C
<statement sequence1>;
9 p6 t1 e+ b3 u G$ y# C+ S3 B5 t- L when <constant_list> then. ? E' T! Y7 m8 h" E
<statement sequence2>;
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else, `+ b" h: D& J5 C" k$ {- q
<statement sequence3>;. x! c, B* a4 @
end;
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2 E; ]+ F0 O# n. F: h2循环语句
( ]! V/ s) p& k3 T" Q; _ (1) from <statement sequence1># g5 `' m7 S/ Z d0 z5 U2 ], H
until <condition> loop# A6 ^) c& B8 u$ [
<statement sequence2>;
* j3 R( Q- b+ ^4 m& ^ end;- g( Y% M1 @3 M1 L% f/ m6 ?
(2) while <condition> loop
( K }! q+ V) h9 H <statement sequence1>;
4 o: F& i' T. A: f end;
, w, U/ ]% K1 D9 y, S: ~ (3) repeat
& K, t+ W1 y x8 P& ~& ^+ } <statement sequence1>;; I, q' n& I: s8 L. P
until <condition>;- {6 L* `9 p% ?& V0 \+ m8 }9 q! j+ Y
(4) for <condition> to <condition> loop9 m0 Q3 M0 N/ V
<statement sequence1>;
2 d3 |# r, L: U next;
P: w/ j+ {/ p3中断语句
$ o- N/ v% l( q( R7 @' s waituntil <condition> prio <integer expression>;+ f- t* V6 g, c3 u$ D' q
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以上为常用的函数！. l% F! F8 L2 E& w# Y( Z3 F
还有很多，如有需要我把资料发到你邮箱里 6 h4 Q- ]: a$ |9 f7 x
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