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发表于 2012-11-13 08:48:12
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1判断语句: Y0 V0 s$ f, L* q3 ^
if <condition> then2 {3 E+ X" g* f6 p2 L! J: a
<statement sequence1>;: d* n- }: {+ G7 W; b7 [: [
elseif <condition> then
0 \0 v/ H5 p( N- Z, E0 I <statement sequence2>;" B& k! X5 s7 d2 i9 j
else
2 v y0 b. ~! Q3 } r) Q <statement sequence3>;
' T1 ?7 Q9 C; V end;
3 g1 }/ J4 I2 R u7 T2 { [$ J如果分支比较多，用：
) l7 e) @' D" w6 l( I% ? inspect <expression>
0 V! X! I; k0 P7 h8 z& j when <constant_list> then8 m4 f* @; g0 a) k* p% J
<statement sequence1>;* g. o4 r+ \/ O4 l3 F8 _4 }
when <constant_list> then. m" i' U8 d& r1 V7 `
<statement sequence2>;
( w# c$ r6 b2 n' ` f# T3 r ...
/ ^& U; m$ b2 S* h else
. i" i9 l( {) x0 P <statement sequence3>; V' F. F& d6 Q7 @$ Y# |, w
end;
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2循环语句3 g/ } k* M/ G3 v7 D/ I3 ^
(1) from <statement sequence1>
5 N4 I( u. j# l" q+ D6 ^% T2 ?0 C until <condition> loop6 n9 m; o3 f& V2 A5 p+ ?
<statement sequence2>;
6 }, b7 E( X S end;) X5 q6 m8 C; K" A$ @
(2) while <condition> loop6 z+ r2 X. f1 m0 M( G6 O$ j6 |. Z. n
<statement sequence1>;
, ]6 ~+ a' i* T/ w0 A# y4 d end;
5 g, z. n- H" k. S! v (3) repeat
9 J0 E; w, u2 y3 j7 N. G$ Q <statement sequence1>;" o" L5 p& u5 R" F. _. f
until <condition>;+ P3 h: F, S8 M$ H4 D1 r
(4) for <condition> to <condition> loop e+ D, K7 L5 r- S
<statement sequence1>;
; U' b8 z8 X- G" o# F next;6 b: Q' O+ \5 n( [
3中断语句
) j2 q8 L! h+ y- H7 b! I waituntil <condition> prio <integer expression>;
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以上为常用的函数！
% x' z' a9 P6 [! x, }还有很多，如有需要我把资料发到你邮箱里 ! Q3 Y- X0 U& u8 ^* S1 q
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