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发表于 2012-11-13 08:48:12
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1判断语句
* x4 q0 k9 N0 J. y7 w6 F9 Y if <condition> then
( ?# E6 M: s' }! V8 b. q2 f <statement sequence1>;
' c& E! g7 W7 O! o; Q6 ]* o elseif <condition> then
, h, ~' o8 y- ^* n <statement sequence2>;7 V& }4 s' M' s( }9 J# H
else
" F* L, S7 V1 l" M' R <statement sequence3>;
2 L% ?7 ]+ R1 M, B end;
% ~% w# s, |* K- S如果分支比较多，用：
" d* L6 ~( U0 v1 q/ Q" M; v2 ? inspect <expression>
6 g! k6 X1 U: p/ C& l8 B! M when <constant_list> then
0 \; d: H* y! q' o9 i3 @ <statement sequence1>;1 V. ~5 w1 S; I4 P3 M0 t# Q
when <constant_list> then
& \5 T& U0 }4 ? <statement sequence2>;. N: W; [) ?. r9 Y: S
...
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<statement sequence3>;- C$ Q. @9 ~$ X9 R# @6 x
end;
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9 O& f5 D, \; g, g7 v& a2循环语句& o, |) a; M( H' M9 S+ K, ]6 }; @
(1) from <statement sequence1>6 S% F! }7 |, A- V
until <condition> loop! H8 U' `) i+ p+ Z
<statement sequence2>;
$ i |) W# e+ B% R2 ? end;. n) K# F. K; R* d' ]
(2) while <condition> loop( b1 Z0 M7 F5 f4 o. j2 Y
<statement sequence1>;
# @4 a& I/ V2 b0 f end;; L g4 S" O/ F( j; I6 q( }' T
(3) repeat
5 g8 N* z' m% t <statement sequence1>;, n" {9 ?, f. j e" C7 B6 l
until <condition>;
9 a# i" ? K/ ?% v! ]* a' t (4) for <condition> to <condition> loop! J. x2 }& a2 K, s# B9 ] z
<statement sequence1>;
, v: v$ v/ m3 | k5 d# A# ~ next;. p+ e( M$ B8 O# ^7 _3 y% y
3中断语句
$ N/ G" i/ \0 Y; j7 j5 y0 D. y waituntil <condition> prio <integer expression>;
+ c% i+ e9 x8 o2 e5 _2 o* j* D) X2 z. o
3 j: M0 f' Q3 f) s/ E
以上为常用的函数！
. E# e5 P: s! n+ O- u还有很多，如有需要我把资料发到你邮箱里 / p$ F! T* {1 ?* |, J
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