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发表于 2012-11-13 08:48:12
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1判断语句
# t/ T: Z9 \' c) y/ D if <condition> then
/ W: g N# Z8 `( \) w6 C <statement sequence1>;
1 u& ]- c$ N- I1 H5 }2 q5 k elseif <condition> then p4 y" S e) i6 Z4 ]
<statement sequence2>;
' q1 F2 ^/ r" z5 r else . f! e: Y, H5 O
<statement sequence3>;
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如果分支比较多，用：
# {& d3 W7 B' `! N0 D0 L7 n9 v inspect <expression>" p; a- N7 W$ t. [
when <constant_list> then0 L* a# ?6 j! E4 R8 g
<statement sequence1>;
6 q. C) T$ p% A7 S7 \ w& P: Z when <constant_list> then! {9 ` W* Z' I/ S9 w1 C+ }0 P
<statement sequence2>;
* a; }7 [; `1 |# [$ a ...
3 [9 C9 M* n5 S$ H% J& B else
. v5 _) X" ~; a& y6 C, n; B* i <statement sequence3>;' V4 H( B) e) i0 j" }) Q3 I1 L
end;2 t0 o9 k' q7 E
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2循环语句
- q+ H" b. q1 g8 C) ?+ _+ [) Z" o# d (1) from <statement sequence1>
/ h2 ?, o9 v6 V0 u2 p7 j until <condition> loop5 Q: G7 J/ V% n
<statement sequence2>;
8 M% s/ [8 }* W4 [ end;
2 Z8 S+ _" }2 H% ?3 f (2) while <condition> loop8 w" d0 s8 @8 P `6 n2 B+ a& o( ?
<statement sequence1>;' g+ A$ m9 R& g: g7 g8 R
end;
2 u7 B. H7 |% b Z5 l) B* r N (3) repeat
* j* X% y# g" \2 ]1 X <statement sequence1>;
) |- ?8 C$ Q! M9 y8 C% }, `% V3 d until <condition>;% R- X! p' ~8 h8 p" e4 ?* @
(4) for <condition> to <condition> loop
; ~$ R& ~1 P! t' ]+ C& I <statement sequence1>;4 A3 U8 ]& r3 n. C$ D3 `+ D) p
next;
# i) m6 j3 v0 H% D; f/ `) f5 t$ a3中断语句' ]( B: m$ Q7 E0 M& `
waituntil <condition> prio <integer expression>;
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以上为常用的函数！/ k5 e8 w7 ]5 @5 V2 B, V7 W7 m) Y
还有很多，如有需要我把资料发到你邮箱里
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