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发表于 2012-11-13 08:48:12
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1判断语句
; W8 G. S/ z* G4 \( ?) @8 j if <condition> then' V/ ^& @. o. B5 Z6 K$ |+ L; q
<statement sequence1>; d8 c5 s, q3 l$ r$ h
elseif <condition> then! a/ f3 e+ x0 v) U1 w$ A& x: Q d
<statement sequence2>;
* |: J: y, k- x4 t else
1 P6 \! Q! ^4 i% D8 K+ d <statement sequence3>;
: `9 Q. C7 [$ v; G6 \9 m end;
9 k! {" E9 [0 [: X) n: U. ~如果分支比较多，用：
7 u0 i. O9 ~3 e6 G! @" E inspect <expression>7 `0 |" z+ l) ~5 Y0 B9 m5 F! p
when <constant_list> then n" q% D! B5 A1 w
<statement sequence1>;4 ]! {! ~) @6 }2 O2 r2 S7 G. b
when <constant_list> then5 q% o. B( D6 P4 S2 z4 ^
<statement sequence2>;
1 i" Q- Q5 G7 @* h) s6 @7 u# {# \ ...
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<statement sequence3>;0 @8 t7 v$ e6 G. L# L ~. m% J
end; g9 B1 d+ Z/ d6 s1 I" J
/ p' k3 C8 c5 R; {8 {. r1 R2循环语句
8 W: u! E6 M! R8 v& ^: f: j (1) from <statement sequence1>6 A4 q7 m0 ?, z3 f: t
until <condition> loop
* ^' d$ s3 d& N <statement sequence2>;
$ y9 }$ K4 @; s2 q v end;
" v/ A8 \& j2 W (2) while <condition> loop/ B% a+ _. X. u
<statement sequence1>;
7 R1 o2 F$ X; w$ C end;/ Z: A U4 r7 R2 B
(3) repeat 7 ], W% D0 X, s8 }7 p9 _
<statement sequence1>;
N1 u/ q- ~- A9 l( _' [ until <condition>;
% ^; ^4 }1 T8 C$ p1 { (4) for <condition> to <condition> loop
- w+ Z! L9 K0 ^2 Z <statement sequence1>;
$ F1 ?& o5 V& N4 y' p! N( f next;
$ d4 m4 c4 C; C8 f0 ~) J! {6 p% N3中断语句$ \* C0 ]! d6 ?0 z$ s
waituntil <condition> prio <integer expression>;: N; J! X- ^: F' t
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以上为常用的函数！
1 Q" u# M# j" U4 c; [还有很多，如有需要我把资料发到你邮箱里 " r9 J, _/ \6 | p
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