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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
6 z/ h# g `- O& |0 [6 H' M& f& _( } if <condition> then7 ^& S) w+ J! Z
<statement sequence1>;- T. x g2 m0 Q4 @ J A
elseif <condition> then
5 l1 F! @& a3 c# |0 N <statement sequence2>;
( {/ X' B# J2 n$ _' a7 N0 r) P else
, x0 e5 W) h2 H! P <statement sequence3>;
9 n" d/ Q i3 @! ]/ C end;
/ q/ q# Z) U1 h8 H/ s5 F如果分支比较多,用:) \! u( I1 W+ _& a/ ~8 J5 Q
inspect <expression>
0 r3 a6 K' H8 t) Q: w0 i( V' q, B when <constant_list> then1 F# g) i4 A) M+ P2 b2 Q3 f ]; b: g% Z
<statement sequence1>;
, L& S$ b3 v: q; Z when <constant_list> then, w; I- i# o x i
<statement sequence2>;
7 r! y( l& f9 G+ a ...
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<statement sequence3>;" V" e2 d" G. r q. c2 [/ _3 m! ~1 R
end;
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2循环语句
- ~3 S9 G$ y& q. P9 g (1) from <statement sequence1>* p8 B) S5 A* X5 E" O* h
until <condition> loop7 e! F" c* t$ R4 z4 m4 j
<statement sequence2>;/ p+ ~+ ~- n0 X5 w! x
end;
8 n8 b+ t: N$ o) T, ?& g2 I2 e' p (2) while <condition> loop! v( j3 x: K% \
<statement sequence1>;/ b+ I* Q: F* S; \3 v; u" E: P% {
end;
* L2 F' I& d: _ (3) repeat 5 o3 l5 P* C) ~- V- b1 j
<statement sequence1>;
& |3 O' k% G/ M0 k- I until <condition>;
! d% E/ w% u# m/ T% x; z (4) for <condition> to <condition> loop
3 h6 t; T" U/ I5 [+ U <statement sequence1>;" c* w: @" Z% c7 H# m
next;% n& g7 N) t! Z/ f5 W1 i
3中断语句4 Y/ X i6 W9 j
waituntil <condition> prio <integer expression>;8 H1 v3 _ G# A9 [- d
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以上为常用的函数!
- [& u" [! X y) ]( W还有很多,如有需要我把资料发到你邮箱里 ' X" p: K: _- i2 C' o. i$ X1 s7 c
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