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发表于 2012-11-13 08:48:12
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1判断语句# @2 w. U: N' q: ~9 F
if <condition> then
* n) A) q; l8 ? <statement sequence1>;
6 m( l2 B; l* Z) ]- a elseif <condition> then" K! L$ X7 J2 e/ `
<statement sequence2>;
, V, [3 @7 G$ V3 |; P. ] else 0 x# A5 a3 c) a2 i
<statement sequence3>;
+ ]2 \& G* `; k, I" ^ end;& [$ l2 o" F$ K7 w4 h
如果分支比较多，用：7 W! Z P6 c4 ?6 Q$ `! J
inspect <expression>
0 S3 H1 Y. f+ o+ t* X& ]1 A! a when <constant_list> then$ t) F# v' s# p) B; u
<statement sequence1>;
" s( \! G9 G/ z/ @; k4 v when <constant_list> then
f/ X9 w& j' m$ d7 f0 @, n <statement sequence2>;
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else
- W3 Z( z5 i x! ]- V9 T, S9 w <statement sequence3>;3 y- B$ y1 }( G9 V" E& G' }
end;! [ W# P8 v$ o5 g, K6 x
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2循环语句
2 @0 T5 c) t. C8 V o$ Z3 K (1) from <statement sequence1>' ^* N1 B9 n3 w2 f1 B
until <condition> loop
9 G/ }( D7 T3 ]4 J% V <statement sequence2>;
U6 R, c' V& j' y6 I end;
8 I* ^% d2 G, e2 j (2) while <condition> loop2 O# [( W% A: X4 b
<statement sequence1>;9 V. s9 Z, b- a, k# l
end;
& @: E% Z! e9 Y6 H (3) repeat 8 Y) s1 D; g) P5 g7 g0 v5 C. Q P6 h
<statement sequence1>;
0 t- K- \, x4 m/ ~7 R% a% v) J until <condition>;1 x8 p2 h9 O8 T) ^0 b$ |
(4) for <condition> to <condition> loop5 q9 X. f3 P0 L F1 h: G6 l
<statement sequence1>;" A' s/ o' M9 ? i$ d/ F9 K
next;$ C- k7 K; n5 W- H$ [, V& `. ^, B+ }
3中断语句
8 D5 e* u" D, E, _+ m z waituntil <condition> prio <integer expression>;
8 [7 B0 w' v, B* [+ i% {3 k) E0 Z" b9 N, e
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以上为常用的函数！
* U7 s0 d3 V2 x0 |- M9 {还有很多，如有需要我把资料发到你邮箱里 ! d3 a" D! U- @: c s
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