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发表于 2012-11-13 08:48:12
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1判断语句
' R# b" u3 F' V1 c if <condition> then- o; q# K" f# K
<statement sequence1>;
+ H9 A& W3 Q1 i6 y elseif <condition> then0 F' R2 g8 E/ Y, D4 f7 X# `% o. h
<statement sequence2>;
, u. ~0 G/ b7 `; V2 _2 I else
# {/ w/ @4 j( t3 M5 h f1 c <statement sequence3>;) s) L7 ]$ p3 Z0 }# T6 t
end;
4 T7 B3 x5 T1 B+ o如果分支比较多，用：
% I$ W1 B' c' W% R- }& N* v. h0 T inspect <expression>
p+ s- h$ G+ d1 x# O% | when <constant_list> then* Q% Q/ e+ @) ]2 E5 h
<statement sequence1>;
9 v W9 c3 x- o8 T, J6 q- A& D when <constant_list> then
& c; J9 U7 v) ]. Q <statement sequence2>;/ L. ^, i5 h% R+ G' x' B' P
...
9 L8 v1 l, P+ K- n& H else
: }6 w/ v2 ?) N$ C* s <statement sequence3>;0 o6 [& }- T) k- U9 e D+ I
end;- m% D4 e, h; M
; j" j& F% h& A$ T2循环语句. d2 ~. |! P) Z- d# a: S+ Y1 `4 l7 C* L
(1) from <statement sequence1>
0 T, `% x! y7 o3 x* @) T# ]6 y7 i until <condition> loop
0 a j2 ?: }* A8 S <statement sequence2>;
- S& w% I5 F/ ]# o) W, i) ?, C end;
. P+ w( t# }: @1 O2 o (2) while <condition> loop' ]8 S6 h2 k4 }; `3 d' Z" v
<statement sequence1>;
! ~) ?/ f V( R$ c end;* ]$ Q3 X! Y" W4 ]( r, { \
(3) repeat 6 D# K# J7 D& s
<statement sequence1>;; o7 H6 y& u: z) z3 o: a6 t2 D
until <condition>;
! j, H5 I& J0 L. ^6 g (4) for <condition> to <condition> loop
* E' k+ E) v3 @: h {# R3 ?. x <statement sequence1>;7 T0 i9 |+ r S# h" `0 Q8 A
next;" y1 B4 L( Z2 q- @
3中断语句
# _: Z) J; Q/ S( z" z waituntil <condition> prio <integer expression>;0 j0 [7 s6 q" |* G
: K0 Q0 f* R2 A2 a1 k4 C4 S
9 ]0 [ [: d- v k/ P$ c以上为常用的函数！
6 N V( ]8 l- T3 ^4 z0 o7 K还有很多，如有需要我把资料发到你邮箱里
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