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发表于 2012-11-13 08:48:12
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1判断语句: V0 l1 d% c V5 r6 I C8 t
if <condition> then0 l- Z! c9 X1 @7 r# r
<statement sequence1>;
# T7 d( P( m& X: W& w elseif <condition> then
# j* [# ^% m- C5 h/ O) ~. f; q <statement sequence2>;& O* X) ?6 A$ `7 X8 o, E* k
else
+ |8 r2 A4 G) X0 n <statement sequence3>;$ @0 U# j) O5 I8 w* m# _
end;3 B0 U9 \! q5 |! R- y! N! j
如果分支比较多,用:
6 i. K: V" |& Y( G5 A2 I; \* Z+ t3 G" y inspect <expression>% C% n& R+ b# ?. N7 s0 X7 }
when <constant_list> then
9 S* {' a) `8 ?. J* U8 u <statement sequence1>;9 y/ s. n8 D* q* O+ d" v1 _
when <constant_list> then
* J' G, O/ w7 H7 [- W5 g( \ <statement sequence2>;- }( I0 J2 A8 r, S* ?& K7 c# B
...# ~# e: r h/ i1 {5 P
else* r9 `0 Q: C4 y" S5 S& k" U
<statement sequence3>;
( m4 z' j% p. h) F" X, m1 y. R3 @end;3 j3 ]( L5 P, J; s# ~$ M; c5 m
+ i7 W& O7 E6 o9 U m. Q# t2 V2循环语句, G; `0 s: B9 |4 v
(1) from <statement sequence1>
7 y9 I- t3 q! x* ^* S+ l% q0 v) } until <condition> loop
$ t8 Q8 F. \+ J/ M1 X% } <statement sequence2>;
# S' a/ ]7 H) O7 g0 P. m5 E end;7 U& f% H: w. t& B
(2) while <condition> loop' u$ O2 D; E5 E1 R3 L! c5 M. }
<statement sequence1>;9 G8 f5 H" s: C9 M& h& ~
end;" p* n9 g" A# |
(3) repeat 5 x" A9 l' Z/ {8 h- S
<statement sequence1>;
5 C' U$ Y9 @3 ~' m until <condition>;
4 J- v2 x) E! Q# i (4) for <condition> to <condition> loop9 v5 M; q1 O# F0 b. H
<statement sequence1>;3 @1 R, \* y- u. n$ }' l: p
next;
- r T/ N- S/ d3中断语句
$ l. \! y! R0 `6 H waituntil <condition> prio <integer expression>;
$ X' t% M% r; f3 t+ @% S1 Y2 ]3 ?& Q: p7 ~0 P; J2 e3 S
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以上为常用的函数!/ C% Q3 v) N4 [
还有很多,如有需要我把资料发到你邮箱里 $ J, u4 ^) E" B1 P5 [8 a* [
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