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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句/ F: [1 j6 u, P+ C* T$ d
if <condition> then
0 b- i; r7 _2 a6 W3 \ <statement sequence1>;
# M7 [# k. c# ]8 ` y# p; V1 N3 k elseif <condition> then( ~& F% w4 b: N2 i$ {
<statement sequence2>;# r+ i5 s. `+ c W% v0 u( X6 y
else 0 q/ ~& W8 ?3 `6 T2 F# X' o
<statement sequence3>;
Q8 \7 D! d! Q end;! y% @5 \; W; n6 D* ?( x' ^
如果分支比较多,用:" k& `8 k: i8 f6 j; I& Z
inspect <expression>
3 E1 i0 U& h0 \- ^0 H1 f when <constant_list> then
( z7 k" v! S: g" I <statement sequence1>;7 n: c8 ?9 z5 |4 A+ t: U+ L! ^
when <constant_list> then& k, r9 W% T& \; x6 v* \. U( o1 Z4 O
<statement sequence2>;
* m" f1 v' L' @0 u5 G' g5 O8 H ...
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<statement sequence3>;
( p) s" x, S! O8 l' ~7 send;
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% e. F8 a. R: b8 C! e9 R k1 C2循环语句
0 |; T! b( L: X4 ?1 ^ _1 T& Z5 `& N (1) from <statement sequence1>5 J# a* |( t t2 P k. f
until <condition> loop# K* L, ~6 h5 h n" {# }! Z
<statement sequence2>;
- M& {1 G9 `7 _0 X end;
/ R: f" p( E7 e- O9 t# M& L (2) while <condition> loop
$ I9 o9 A6 v8 q6 V& a0 \ <statement sequence1>;# D) K! @1 \- H9 C4 v q
end;
- _% t9 y9 w5 n9 l- F8 d6 I* b. q (3) repeat ! y* T2 O, q/ h+ \: |' @5 Z) e
<statement sequence1>;
* @7 h$ B) U% S$ ?# Z' W/ k/ ` until <condition>;( i/ j/ ~& [2 e( A2 S( j7 n$ ^2 i
(4) for <condition> to <condition> loop
j% E7 Z' `) ~# _ y+ ~9 O <statement sequence1>;
U4 ~5 M/ Y' Y3 T9 T5 B: f next;$ Y5 ^8 V/ y4 ~8 c& n2 [
3中断语句3 z$ i; v1 e! Z# G+ Y! x+ F
waituntil <condition> prio <integer expression>;0 k, y1 h& r x! K8 e2 A8 G1 m
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0 Q7 W0 w( {% }: g9 t以上为常用的函数!( a7 Q' g1 z! U3 `3 N2 _, `+ [
还有很多,如有需要我把资料发到你邮箱里
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