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发表于 2012-11-13 08:48:12
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1判断语句6 P0 E" `- }5 Z" H2 n- v9 g
if <condition> then/ {/ x7 i" s" f
<statement sequence1>;- h6 t( Z9 E6 R5 v) A2 j$ h
elseif <condition> then
/ W: p4 q( ~) V A6 Q <statement sequence2>;
. p2 n& h& y4 t: j0 W" ~ else
, s, F, z2 d6 @ <statement sequence3>;
8 |, n5 q4 ^ g' y end;, @/ Z2 }1 g+ Q
如果分支比较多，用：0 w7 O# d+ ~& d/ r3 }4 y
inspect <expression>
" M# e8 o1 O3 G1 \2 a when <constant_list> then
# L7 T) h+ e6 t. w3 E" h <statement sequence1>;, r) i3 c, s: Z! z1 t, b
when <constant_list> then
& D z( Y0 S7 k L a* v! C <statement sequence2>;
+ c" _; }0 h7 E2 U& V8 o ...+ Q$ h9 R4 Q9 {1 @7 s! ^
else! Q4 S& O9 h) e. f
<statement sequence3>;6 [5 g7 o9 F2 r R3 P2 M8 H
end;2 B3 @) Y6 G8 q" ^( {
$ y& n. m0 d4 p: w' ^: ]2循环语句- V. X4 k& s j8 s* k6 c) F1 R) J
(1) from <statement sequence1>
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<statement sequence2>;! {: l# K# p% s; x: t7 {' _
end;
0 r, E$ |; M/ V6 p4 Q3 |: z2 C (2) while <condition> loop/ W X y4 u: d- X: x
<statement sequence1>;
+ V8 N3 C' ]* K8 m! k end;9 ^! }- i: U' ?
(3) repeat
2 S, d; K( u+ G7 g4 v9 ^ <statement sequence1>;
; G' y) j0 s5 W# G until <condition>;2 Z2 d# ~ L, ?
(4) for <condition> to <condition> loop
" y, a, n& F+ r6 X7 @7 v <statement sequence1>;
' j( A' E7 ^1 }* ` next;- X7 I1 M0 T1 ^+ V
3中断语句" ~0 r) ?) _" q! \
waituntil <condition> prio <integer expression>;% u, ~, S0 c# U' Q
+ A- v$ C. b" v' ~6 U& F* }; R- v Y
0 N3 d' X1 d ?3 _以上为常用的函数！
: f6 m8 T- R; a还有很多，如有需要我把资料发到你邮箱里 % G+ }: M; ?, j x- i# O
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