|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句% C' w2 x P+ Y0 {
if <condition> then' ~9 K$ F v9 f0 ]( L
<statement sequence1>;& K! l# A- R3 X$ ^) J/ }, w7 Z
elseif <condition> then- p- o4 a8 A4 A- q0 h! [
<statement sequence2>;
6 A% |* e* _; Q9 Z. E' V3 | else
" x6 }* [9 O" l, h' ` <statement sequence3>;
& M0 d( \9 h% h# G" l. u0 x& V end;
, L% J& c! P$ i4 X如果分支比较多,用:6 b+ d+ m3 u5 w1 R* Z
inspect <expression>
1 }; n* M# G3 Z( _ when <constant_list> then
+ D) m3 u! k" P, F- i c4 y0 ~( L" E <statement sequence1>;4 N# x8 d [- m: Q e+ u) g r
when <constant_list> then% N! J& D( u% j2 D1 e, A% |
<statement sequence2>;" `" Q8 J$ {7 p% z
...% h0 n% Y( r! a6 p7 E
else8 J$ D- R5 D) E' |! J$ b2 n2 c
<statement sequence3>;
0 E! j+ S. Y! E6 Z( E; H# gend;
2 C* L5 `* K4 Z0 Z2 s" x; o, b% I8 a& K2 t: ]# W5 V. W
2循环语句4 I. O9 {. Z9 g
(1) from <statement sequence1>6 y0 C( V4 h0 J
until <condition> loop& C Q, Q# A8 O3 D* p
<statement sequence2>;
/ z& d, n! K o3 A! \ end;' u2 z9 l0 Q$ T
(2) while <condition> loop
* @( d: L: z! O8 M! T( w <statement sequence1>;7 w. _: P9 o7 |6 c7 @" c, m
end;
/ l h% g& _4 v, {2 K' Z (3) repeat 1 V5 A; S$ ]6 Q+ P1 {6 C
<statement sequence1>;! n( R3 A8 v! F M' {
until <condition>;
' D7 h8 h2 R. s/ T (4) for <condition> to <condition> loop
+ X% ^' z, u- j2 H2 I2 S <statement sequence1>;$ \ i$ F% [6 G5 i% m
next;
' b8 r- n, y$ s! ?: m! X! S# Y# d3中断语句
; B1 h9 D* @: V9 D waituntil <condition> prio <integer expression>;" b% K1 X% L3 N5 d" ?3 t2 ~# k
z0 |) y8 R/ l! K! J& G# q' [, c" Q# N. E- U7 v2 m. \; n
以上为常用的函数! V4 }5 F% k4 z5 k6 R# @
还有很多,如有需要我把资料发到你邮箱里 0 l! f- l' ]$ X ~9 F4 m2 z
2 @ l$ w" T. _7 _) J
4 S# k% q ~- G. v) q9 A( W& z" @4 t' i* N$ S: [( ~
# k6 t4 ?4 _7 |' o% h i7 u) v" l1 L
9 E* q+ o: N; R# e# H9 Y/ n7 M2 \- K/ O
. U$ U7 R" o' P2 z5 {2 x/ S: H- ]4 r6 S2 _+ [5 o0 X6 y
- M! | }: j& P8 H3 N# u$ J: G 7 I7 ?0 L' x3 W- V
|
|