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发表于 2012-11-13 08:48:12
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1判断语句' a# c" K$ u3 P2 c" y% V, N
if <condition> then
4 R, Q$ s1 ], t7 M! ^: H4 q7 Q <statement sequence1>;0 e, t8 s z& k+ r
elseif <condition> then; P+ P w/ K% F, y! J# S9 D
<statement sequence2>;% }5 ` j9 z# [5 Y
else
5 u$ o( V5 k1 S. K d <statement sequence3>;
4 l: v# S- i9 ^1 X' O- N) K4 R' R end;
: r7 L' [; Y6 N: X7 m ~7 I, B; [如果分支比较多，用：
$ V2 R; c$ Q- h# p, e% l$ q: J inspect <expression>
* c# e- q% O) T when <constant_list> then
! ]; p" w! ]2 V: f) `$ U <statement sequence1>;' Y1 l8 q: q% z% j; E' s3 Q$ S+ z
when <constant_list> then
1 r. j/ I8 d/ i! F$ r! ~ <statement sequence2>;
7 @; |9 |. ^8 S- F- }* f0 A ...
7 z! g7 c" L( ?( R0 ~5 i else
$ ?% H+ y$ Z- b# ^8 c <statement sequence3>;
- T) e/ K1 }, f; @end;
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2循环语句
4 t* q) x1 |" v) V: P (1) from <statement sequence1>$ h2 v! a& ^% y' P7 k8 H" ^
until <condition> loop* N1 H; A4 g& b
<statement sequence2>;5 c0 M/ c. y5 X* J' z; W# C6 D( }, _" h
end;; _ A/ ~( |# r. W
(2) while <condition> loop2 P' Z7 m# B$ k. J
<statement sequence1>;
/ h: S! c' J9 Q x+ I+ B end;
! w* |5 G: v p: |# x (3) repeat . W0 [4 w+ B7 M- ~
<statement sequence1>;
3 v+ `" J7 y2 _, A; K) N until <condition>;( b; K: B u: w6 {( R- [
(4) for <condition> to <condition> loop; L' h% O4 m$ C
<statement sequence1>;
& t7 L8 H5 j% ?; T, m' o next;
$ E5 s5 o% n$ q: g3中断语句( x. k+ p/ i9 N; y0 h& Q$ j7 b
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
) |9 O7 c2 k9 h" N* k9 E9 v |还有很多，如有需要我把资料发到你邮箱里 9 x' `2 o* S* Y7 G
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