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发表于 2012-11-13 08:48:12
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1判断语句 H+ z/ O( j4 h
if <condition> then
4 B1 [, f Z$ l* K0 ?( I+ i* o <statement sequence1>;
1 ^' A% O. m6 ]0 ~' g/ ` elseif <condition> then
: `" d: J S( m. s9 n+ y, i0 B <statement sequence2>;- m9 _: G! }$ H6 r0 d4 [
else / k$ _7 f9 q8 _" w, K( X
<statement sequence3>;
4 d+ u$ ]3 N( g9 B, D end;
' \0 @* U+ J1 }7 Z1 ? W9 k7 {8 V如果分支比较多，用：
0 D/ k- I' P" O3 {, n1 v inspect <expression>
! k' c. p$ W1 @% r1 o when <constant_list> then
* z' P0 p& d& h% B2 {& S, f <statement sequence1>;
6 L" H- X$ Z: a+ T when <constant_list> then
* o) V6 l6 e b- r9 h# ?4 ? <statement sequence2>;+ l. J5 o) s' b' x, ^* w
...
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<statement sequence3>;4 q, B, k o/ ?0 G5 J3 x
end;& \: J: q3 q. d1 L0 b: ]3 R
$ }6 S# d) O7 v) T# y* Z2循环语句
+ z: w: T) G3 J5 C& c (1) from <statement sequence1>/ N5 ^, Z9 q& Y; O
until <condition> loop* K" \) @% \# w: B: K- f
<statement sequence2>;
* M' N- @9 @( ^; [6 {6 a& a* y end;# t: K, r( g$ J% ?. b
(2) while <condition> loop
( Z2 k8 S. C$ L P; { <statement sequence1>;$ H( K k* G$ \9 l' V
end;
+ o; }3 K. _7 h0 o% ` k (3) repeat 7 k4 V5 ^2 J) c: a7 j/ X: q5 U
<statement sequence1>;: X# _* ^# ~" g; n% N; a
until <condition>;
: ?7 d9 X$ n8 X* l4 D (4) for <condition> to <condition> loop
7 f! X& y, v9 d J3 k <statement sequence1>;
4 w3 m) A$ Z( t' P7 M* X- o: U next;& a, I% K, _- }. g
3中断语句
# C. S( `- G ~( X0 [6 X waituntil <condition> prio <integer expression>;- Y9 ~8 ~% N) U$ C
! J. R5 L2 ?7 ?$ g% r3 U* _
. {4 [8 V% \- B9 A0 M) d* Y以上为常用的函数！ O8 S ~" Q+ i# F5 I
还有很多，如有需要我把资料发到你邮箱里 - v+ I* I7 M. P/ ^ P P
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a+ w* M) Q' l1 [! ^6 Y0 i/ ^% v. G& t1 E2 K+ D
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