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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
$ O/ g1 O V. @; k5 t if <condition> then
) ^$ t L3 }/ X, y4 M1 | <statement sequence1>;
; K# j- p0 F9 S6 u! H/ d( { elseif <condition> then
_4 v* ^$ ~# U% }; Z6 N1 J. G <statement sequence2>;
- [% D `. R/ [ else
- u8 f% F$ R* o6 c4 P <statement sequence3>;, j3 C4 K7 y4 h. [0 m; d6 ~
end;/ l5 G$ B! q- ^! A6 I! y
如果分支比较多，用：3 o. U7 Y# A+ c, C0 G
inspect <expression>2 @% E4 F/ k( }5 o: }
when <constant_list> then
1 h7 x2 C f R' k4 x6 C <statement sequence1>;9 x& l0 k8 L* E7 d- W# {% p* f
when <constant_list> then
& C0 Y' K4 S1 l! d! ? m( { E <statement sequence2>;5 A4 q% W0 D& y
...8 i* |: r4 L2 {6 J o
else
0 |( E: Y, E8 a <statement sequence3>;
0 Y" g3 E9 g& d7 s9 p- ^end;4 s$ }6 K6 \: @! J
" l' }- b! k& S) |2 \2循环语句! D& [* c3 Z4 w" h' ~
(1) from <statement sequence1>
/ I6 E9 ^; \/ Z# l3 `7 \1 S until <condition> loop. O3 c/ @* E: f: E. L) Y
<statement sequence2>;
- L. T" m7 H" T1 U% t& t0 x end;
8 w2 k. ~6 I- j% x0 d (2) while <condition> loop) j6 S7 Q$ R" I/ Z" C
<statement sequence1>;
8 Q! b' P I0 q/ N end;
0 |4 B) ?3 o/ p0 [3 F& ` (3) repeat 4 Q s, J4 ]' d# w# D
<statement sequence1>;
" x; f9 r) Q# L( g! b: h until <condition>;
! J1 ~! X' r9 R; q$ J (4) for <condition> to <condition> loop% l7 o$ R& o* C3 `, Q
<statement sequence1>;- a J! p T, W1 @7 O% z+ M
next;
& K$ q7 ?3 X8 X: D( P1 r3中断语句
2 p/ ]) \) }% A waituntil <condition> prio <integer expression>;
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以上为常用的函数！+ T5 j4 o% w9 s" [, }- w2 C# x
还有很多，如有需要我把资料发到你邮箱里 9 h) o4 D# Q! e& E0 \
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5 O2 ~& s& Y5 T5 I
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