|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句4 ~; L+ F# e$ {3 X B- b6 b5 u1 P
if <condition> then1 G$ q1 P. m7 Z7 I* I) @9 e! \
<statement sequence1>; T/ E- m$ {) o6 z4 Q. V1 c
elseif <condition> then
/ c" S4 U v L6 A8 ]$ N( H0 ] <statement sequence2>;
) H, [2 c D: E6 d6 r! q1 g else
: `) ~; M9 R2 G1 T; W4 C- v <statement sequence3>;) \; `4 a9 ~2 \$ Z( i! F
end; j) ]; T |! q- B9 s3 K
如果分支比较多，用：
, _( g+ k, c" O; d% g7 w inspect <expression>( R7 O" {9 N$ G6 {
when <constant_list> then
3 \( L) O" _3 K( {8 p4 V( `6 g <statement sequence1>;/ E2 }* z% v1 `/ g6 y* ~' S% K
when <constant_list> then4 f' ]! O: @2 x) x' r$ @) f
<statement sequence2>;- b C! [2 [( m# c1 U
...
3 r# G5 i; M0 v# U/ e! E* ]" D7 z else
e/ q: N% p7 m( s) W <statement sequence3>;
/ e# Q2 h9 t6 Q+ wend;
7 V7 U4 ~9 u$ v# C+ V$ j! C, x4 y8 [/ E6 L4 ^; i0 D. ~; o, F
2循环语句8 @- A+ K0 A/ w
(1) from <statement sequence1>- ^1 c! x$ F# d$ K
until <condition> loop
/ A- \, m& e4 e& D9 ` <statement sequence2>;
* g* C# E9 q. s( S& P) f end;, C( B, j. g) y" q! N' _
(2) while <condition> loop4 |$ F( W$ K: j: p2 f
<statement sequence1>;
2 @2 U$ ~# f' O/ H. w) m end;, n2 r( H/ r5 Q e3 r$ X2 p, F
(3) repeat
* W* ]* w1 F, \; {1 _ F <statement sequence1>;
r- B4 V# o, O: N; b until <condition>;
# D/ h+ f: _# r* G: I$ | (4) for <condition> to <condition> loop% R5 Z+ x0 n" k0 T2 |8 l6 S. P0 B
<statement sequence1>;
2 e& r9 l# N" [ next;$ o1 S9 L' i- g; c! S7 w
3中断语句
7 O7 a1 |/ t- `3 x! t2 D X waituntil <condition> prio <integer expression>;, T. {/ }4 V$ A* N* a
( F% o& `; X" {- _8 E% S) v' r* h2 `2 T- ^* `2 E3 h7 b
以上为常用的函数！# C& e2 t! A6 _6 P* s# [
还有很多，如有需要我把资料发到你邮箱里
& V6 t* S/ `/ [, E5 t- D" w7 s( B# ^! ^
2 d" W1 G& A+ Z8 x V' Q: }0 o3 y* @- p" q7 g# y
* Q4 v) ~: C& i) }$ ?8 ~+ O1 e
7 g8 `' ~8 j5 T+ x
8 r4 I# k: z0 Z# E9 w
, A5 t$ c* _) F- s W, I: z. \1 l6 T1 P2 a
$ G+ ` Y& v: P. i0 S* W9 K! }
8 F( S! e9 n3 w3 K N \& u) {; e |
|
[复制链接]
