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发表于 2012-11-13 08:48:12
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1判断语句( S- n6 l/ Z/ |6 b) j& R
if <condition> then# R- k. i+ j4 I1 }
<statement sequence1>;& s4 t# i6 J: T( O9 q! u8 `
elseif <condition> then% n6 F1 D! O5 f2 G% P
<statement sequence2>;
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<statement sequence3>;: B( X- u2 b2 }, y8 R
end;$ P0 R, T2 J4 }& F! X! F; `
如果分支比较多，用：
" ~9 I% x4 G- H3 _6 `0 v inspect <expression>* h$ U, L/ Y8 R; @) A
when <constant_list> then
4 x$ ]9 k; W$ X <statement sequence1>;
{7 ^) @% h+ `$ g4 x when <constant_list> then
7 o0 \9 x: S5 j7 s6 f6 ` <statement sequence2>;
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else6 |1 \3 H/ }+ u5 n- d4 D; a
<statement sequence3>;
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6 q7 N2 _3 f6 ]0 H. h! S/ O2循环语句
, `& F, L: _/ A& ?( T: i ?( | (1) from <statement sequence1>) W* ?& X- B4 M# Z/ O! O! |2 Z$ |
until <condition> loop
" _. ?$ e9 U' t. H <statement sequence2>;
- J: ~/ h8 x+ G" s0 e end; B: ~+ ?) T" J$ a
(2) while <condition> loop: S9 [, V8 U4 m3 {
<statement sequence1>;! \2 I' [% i& O1 V. Q: K. K, u
end;
' m. n/ J; U& ^ (3) repeat % z, J7 k) P. R0 `2 g* V
<statement sequence1>;% L/ z3 u3 d' r$ g: ^) w
until <condition>;, T' f, I q& w( k' Z& }1 g2 m! B
(4) for <condition> to <condition> loop5 z4 B3 l" o, k, B) e3 b8 ^: S, {
<statement sequence1>;9 w( J9 T/ u9 y3 j# {/ y. u
next;1 r1 _+ G9 |" h
3中断语句
6 Z0 @+ J" V1 O0 z& } waituntil <condition> prio <integer expression>;5 l( s% `3 g+ M+ L; n4 ?
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以上为常用的函数！# ^/ C( Q3 e! u4 _2 E
还有很多，如有需要我把资料发到你邮箱里
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