|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
' T+ d/ u: F/ c if <condition> then
! p. u8 g4 z- q# @5 B <statement sequence1>;
3 ~6 s* y/ [* ^8 E7 x elseif <condition> then
# n& |$ [1 V+ k <statement sequence2>;
7 o+ f* T; ^7 w' v! r! W2 y e' ? U+ B else
8 D: w# T; V; Q: \ <statement sequence3>;
# R& |6 V x4 g d end;
8 G$ t$ v7 v! k b0 t如果分支比较多,用:! ?5 q, T, L! L. L2 @; \. S4 ?
inspect <expression>
8 T; n! w1 F& J7 D6 ~- W when <constant_list> then
. l% O2 E0 V* y' H6 J <statement sequence1>;
7 _6 a# D( V4 b- a$ ]* @# W when <constant_list> then
/ a9 P( D* i3 g5 J9 \ <statement sequence2>;
9 n7 I$ U7 \( g% d. f) H ...
, @( J! Q& c/ e8 A) x$ Q) e else
z6 |7 @+ x- k3 C) f <statement sequence3>;
; W, {6 S1 p7 b/ Jend;
+ V5 P" H9 U4 @$ Z+ d# I& u# M8 ~3 `' @; R+ M
2循环语句* r; a/ q* m9 T
(1) from <statement sequence1>9 o! e4 Q8 i$ [' ?9 S" Y' E* ?- r
until <condition> loop
* i1 F8 ^# A8 V9 @7 ] <statement sequence2>;6 e; u" T3 j4 v' G) F9 u
end;
- c* o l9 R5 j) |3 o2 Y (2) while <condition> loop
2 P6 v7 l% L; v, {7 {$ k) H <statement sequence1>;
0 w) a$ F2 q8 O' G8 J+ P1 Z9 a end;
^, W% H8 l; ?, H& L0 o$ i (3) repeat # T, g0 j3 f6 P& x
<statement sequence1>;% l! |* Z' V$ S. u' d
until <condition>;4 b4 h* N N. H7 \* i
(4) for <condition> to <condition> loop; \& H9 H; I& x v2 T. v
<statement sequence1>;
& [, n' F/ O, `: f: ]+ t+ @& G next;
- E0 e q% f4 E1 p1 r$ f; g( I3中断语句4 I+ G1 w3 d& N4 G3 W. ^0 z* j& m
waituntil <condition> prio <integer expression>;. N8 \ y; u5 Z; t! W# O
4 p( H- I: B5 p9 w& K
* u$ \+ c, k7 R以上为常用的函数!5 b& r+ g9 U( \/ d
还有很多,如有需要我把资料发到你邮箱里
& X0 ^8 t# k& }8 ~
7 s/ X( a& v8 L8 v! U5 Y* h( t1 p1 E0 R) s- R* N
$ B$ I* w' Q7 {' q. d# X, M
. I9 t. y% B' P: G5 N1 V
e, f. @2 s' r$ R- n) Q
5 e: t/ `& q9 f. ]! t: o) N
( D- n6 u; s, j4 \0 {1 R
. G ?3 j2 m" T9 q4 u
# p5 y5 I% _% T7 |- u 4 G8 E6 B6 L' k( t$ m
|
|