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发表于 2012-11-13 08:48:12
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1判断语句
8 M' `7 M8 H4 Q" _ s6 H if <condition> then( ] s7 D/ }: Y# p7 Y) I7 v
<statement sequence1>;: k& `4 |5 K; p* d
elseif <condition> then- u( g: f& D5 n8 a9 \/ t
<statement sequence2>;
: S4 ^- _1 S% k0 N) ~7 f+ A6 G0 ~4 H. u else
% a6 ^+ _& m) ^- L* W <statement sequence3>;
/ g! i( D5 @. N4 o8 w! _% x: |* c end;
6 x8 t$ n! o9 _3 Y如果分支比较多，用：1 g2 H) k6 i6 `2 F
inspect <expression>
1 \+ A" r$ M, e; \ when <constant_list> then* B. l+ E0 y/ i; X
<statement sequence1>;& j( O; }( z1 i# M
when <constant_list> then, r6 z4 H- ^- j$ B
<statement sequence2>;. J' j/ ~/ x( M
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else# |& ]6 q2 a! F7 W4 ~
<statement sequence3>;
6 X. _1 O9 Y0 T4 Y8 d! xend;0 ~( r! {. b- X7 P9 L
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2循环语句7 c$ \; ~. j' i. T+ |: [2 | S+ Q0 V
(1) from <statement sequence1>; m& J3 u6 |, ?
until <condition> loop; n4 ?0 `( H+ A9 F9 @
<statement sequence2>;8 e3 S8 `. d5 {9 x. N7 L- Z
end;5 r6 p+ g3 N& B8 o
(2) while <condition> loop
6 A% Y' X; T; U3 O2 O! n <statement sequence1>;0 F m, z4 F1 Q( |" ^, v/ w& Y
end;' X: p. Z( {! ?2 E) x) n% s" O" s3 F
(3) repeat
+ G, S5 S+ f2 R4 G' ~ <statement sequence1>;' |. G: j) N9 P1 O0 v! u! a) y
until <condition>;
! _. w8 a2 k7 h3 ] (4) for <condition> to <condition> loop
/ F5 w% [9 g* a5 T1 M; Q A' C) J <statement sequence1>;; T- ?1 a. r. y9 F8 z" p
next;
: ~0 V' v0 K$ _+ H- x0 X; S; r3中断语句
4 y+ d! m2 B: ~3 M$ C+ N waituntil <condition> prio <integer expression>;1 i- D9 j# L9 ~: v l
+ u. W* R1 D, s/ l* \& I
) i7 G$ H. | I以上为常用的函数！
. o! K0 c0 O' V* y& }9 d$ P还有很多，如有需要我把资料发到你邮箱里 * l, T6 R5 I( c2 U
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