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发表于 2012-11-13 08:48:12
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1判断语句 i. }. B# E% g/ g
if <condition> then0 Y3 X, E+ n4 s3 a
<statement sequence1>;
4 D6 `+ B" e/ c7 L' ~) ~ elseif <condition> then
1 W4 X) S( {8 J& f. D' Y. E <statement sequence2>;
1 i+ \. Q. `( z P; A- j5 c else
# D2 j* m0 {& w7 _ <statement sequence3>;
/ }7 H& X# K7 @5 M) J: v end;& H5 M* @0 p; L
如果分支比较多,用:
/ \, ?! w- l$ I3 y inspect <expression>
7 X! d- ]9 H' ^( t F( q6 L0 A when <constant_list> then( Z+ N6 \( A2 s( c; _: Y7 Q2 B
<statement sequence1>;
! J; L* G. O- D! w8 Y when <constant_list> then' }0 c, w3 e& i2 ^
<statement sequence2>;
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else8 T) S- D, v4 n5 G! |( B9 g! N: t# R
<statement sequence3>;
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2循环语句& _6 P/ p: l6 B4 @0 ~& f
(1) from <statement sequence1>. h4 O6 g4 |& f5 u' s0 `8 T
until <condition> loop
, f0 C0 x) b% B. ?' @& W <statement sequence2>;
& s9 ]3 ?& }6 N' N2 L* W H end;
% e$ M: w F! h6 |+ } (2) while <condition> loop0 H* U# d q+ ?1 D* K; |
<statement sequence1>;* n" c$ m$ J9 u/ Q
end;
2 g( e0 v% I; [7 Z5 h" a4 A5 r ~2 R (3) repeat , G: t. ^. k( V3 T
<statement sequence1>;5 p1 s- X0 ]0 h: b" E
until <condition>;1 B2 ]' {( ^% F: b6 d, b1 N0 t
(4) for <condition> to <condition> loop
: n: L: p. Z" @. n <statement sequence1>;
3 d6 b) M/ O" L1 d next;
/ o5 w; q# R0 r% ]9 q1 I3中断语句* c8 c4 w% [3 x
waituntil <condition> prio <integer expression>;/ E& v# ?5 p' e, }( P
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以上为常用的函数!
- g' j: k: `/ @9 X/ a6 ]4 K还有很多,如有需要我把资料发到你邮箱里 8 Y# c5 e! E# {9 P$ A; D- F8 S% l
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