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发表于 2012-11-13 08:48:12
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1判断语句* r1 U7 }# ]7 o. a7 O- B
if <condition> then& `- N H8 L2 j/ a6 Z; p
<statement sequence1>;
* @- A/ o& [. F) J" [ elseif <condition> then' M( E$ i4 X( p$ Q4 Z
<statement sequence2>;: b1 M' L4 {# x2 o! r3 I; i6 K
else 9 t# V- f6 B: F
<statement sequence3>;4 M+ M) B# q4 T$ M( i8 |
end;0 ^1 W; O0 a' R- A2 l* z" v
如果分支比较多，用：
. K$ N0 Z1 o5 a inspect <expression>. x' p( c+ I/ A
when <constant_list> then
0 Q7 g( t, F9 ^7 v" I <statement sequence1>;
. u4 X/ f% q/ m when <constant_list> then Z% z- p2 ^) r" n8 D/ ~
<statement sequence2>;
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else
J" w8 ~, E% ^9 S' k <statement sequence3>;
& M( e& J! F; q3 e6 fend;1 U3 Q/ O- |% H; J0 T7 y
7 t, r6 Q1 N7 }+ }$ m9 q2循环语句: F* G1 v6 z) [; b* T
(1) from <statement sequence1>
$ v' ]: ]! e8 u" W6 w until <condition> loop3 j s3 R1 b3 ] X
<statement sequence2>;4 m0 D% I- L0 ~) _ Z
end;
% Q8 L9 g) {/ P (2) while <condition> loop' q2 H& { z0 g6 e
<statement sequence1>;1 l, D/ J4 e4 }( B% P0 T" M% ]
end;& g- K& K2 z: G& @
(3) repeat * b+ R K2 G2 z, G
<statement sequence1>;
6 D; R: q% Y7 | g5 D: K until <condition>; D) E9 D* L1 o% u e! g& _# J
(4) for <condition> to <condition> loop# D# l! A+ j4 c7 @ c
<statement sequence1>;
# K; H5 O6 f4 o next;
. Q* I8 t1 e1 Y! W3中断语句
' H k! t9 P0 E- C N/ }) S waituntil <condition> prio <integer expression>;, E" V! s& o) k# b. R" r8 i
) I: p3 y0 y+ F
& I* J9 U) n2 U% l" [以上为常用的函数！* i$ I1 e/ ~6 Y& u; G) U
还有很多，如有需要我把资料发到你邮箱里 5 w& ?& n( Y! Q: M; p
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