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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
5 N! d, M, Q; t) y7 R, X if <condition> then
* E# b8 k- a2 r$ H <statement sequence1>;
0 F2 ^! n/ @- T n elseif <condition> then
: ^/ r3 \ W* _& l0 }: Z( h <statement sequence2>;1 T/ `; R$ b$ }- _; d; s
else
7 K# V( V, ]0 m; D. r$ w <statement sequence3>;* h1 _ k8 S& F& ^. {3 ^
end;3 I) P5 g4 l8 W3 b/ E5 q
如果分支比较多,用:
# w R: R3 @& D$ n inspect <expression>
- N0 o" P5 U" `! A4 l! t4 ~( m when <constant_list> then' b. b2 Y6 e G2 l8 ?
<statement sequence1>;
; k0 R% n8 t* G$ h7 H when <constant_list> then
. h- C5 H, C- b3 v k <statement sequence2>;! r' g/ N+ H6 I8 w
...# f2 q) B" L. ^
else
; s9 g9 b7 {) Y! o( b* H/ s <statement sequence3>;# D5 ?. |2 I0 ?
end;( P( g% J5 r. E8 `; q
: i/ V( T- ?+ R' ?2循环语句
- z# z$ H; A. j: W" v (1) from <statement sequence1>- Z3 ^) S: }4 z' p3 g6 b0 B+ i3 c
until <condition> loop6 r; u( T* `/ ?' \" R
<statement sequence2>;
9 r; X) S Q6 e, L, F end;
- p$ `, \) A7 H( d$ @5 Y- m (2) while <condition> loop
( G3 c: W5 {: O: x' D <statement sequence1>;* @! G" q9 V0 b5 M* o F
end;
* V: s7 e p* s+ w/ q+ Y, u (3) repeat
3 _6 ^" I; z. z3 [% o' h- F <statement sequence1>;3 e5 U0 Y6 W/ b+ T
until <condition>;$ k+ I/ ~& ~7 |" w1 T/ b% x
(4) for <condition> to <condition> loop
4 U: D4 S9 v0 z <statement sequence1>;
- J+ N; i8 G+ @7 `7 p6 u. L& t next;
8 F7 e: e0 X5 F3中断语句( I7 ]& ^# b# d" n- `$ d' m
waituntil <condition> prio <integer expression>;, V/ t `4 m6 k3 @7 Z& V8 z
7 K2 }; E1 F9 M" d
W9 K# [4 C \+ U" [( ~: e6 b4 ]以上为常用的函数!9 S7 E5 ? }, M' H& L" ^. _
还有很多,如有需要我把资料发到你邮箱里
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