|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句0 ?( g5 r. V. v. m7 c
if <condition> then
7 T; G5 X- @$ t9 J! x) X6 u6 n <statement sequence1>;$ C. l5 p- y9 T* u3 Q1 }' g
elseif <condition> then
. z6 W6 x( v/ y! p% E( g: r9 h <statement sequence2>;
7 ^# R& V% ^8 R3 h" [ else
+ N6 p( ~( z m$ Q4 x2 q2 U- ? <statement sequence3>;% g* X# z. K+ Q# \# v
end;
& Z6 k( O- r9 r8 S- u, z* G如果分支比较多，用：
/ A" n- }/ ^) [ inspect <expression>; K5 a% l- k5 q: S! Y) o
when <constant_list> then
# N+ H% w! }" t, L4 w <statement sequence1>;
6 j$ w! ^& z5 }# j7 E+ l when <constant_list> then
% S' x0 @0 Y/ @2 [ Z' N <statement sequence2>;
8 N e% ~; ]% r% p8 K9 N4 H( { ...
$ h2 s5 @0 M& m# [+ ` else& R- W3 q8 t" R
<statement sequence3>;
J! P7 S& ^ s4 o& Xend;/ R6 w3 {# M7 p" h N
! {- n# e( T% V6 U2循环语句
* m. I- `% g) j; o$ b+ P, I (1) from <statement sequence1>
- O2 ^2 ~7 ?- A! N$ t( w( a until <condition> loop
0 C* |& A' @. x3 O; M <statement sequence2>;& |2 p( k) @+ e3 Y0 N/ q( }# `* U5 E
end;4 Q& D$ ?4 N7 v+ M: y2 q* K! J+ a
(2) while <condition> loop
# _& r0 C7 `' N3 L# S5 n <statement sequence1>;
4 C: V5 v8 M/ A- N( M' c5 k1 E end;
# h5 v& _; I" h9 a (3) repeat S5 |9 y% |/ i9 |* U7 N% X3 _
<statement sequence1>;
3 z7 h2 h# C I% ^ until <condition>;
% p0 g" h5 v6 j. G+ T/ E) X (4) for <condition> to <condition> loop% `' p9 a# z# ]6 E
<statement sequence1>;6 P% o% H4 j- k4 W$ W- [5 k6 K8 h0 u8 W( a
next;
; m' y2 a; m8 T/ W* ~9 v1 f9 v) Y2 j1 V$ q3中断语句
/ d( y1 u e9 O$ p waituntil <condition> prio <integer expression>;* E: b& B/ ^7 f U
# h0 {+ X! P8 p- b" w+ m" Y$ t% F* }
* u" O) _ I N4 D0 P- n1 A
以上为常用的函数！0 F: o- W2 ^* ~% y" z8 ^, _) u
还有很多，如有需要我把资料发到你邮箱里 8 y% ^5 ?% Q/ [
0 `& y) S6 O1 b# S% l4 V6 M& P) L
4 g& {3 N& ?5 ~; \% {- H, z% {+ E# O* P
/ r( T$ r& j5 F) ?) x& ?
: s; g: Z o% ~' @ @
# }8 r. V9 H# g; {) e& I8 s# J8 U9 k9 H2 ?! u
! W9 ]3 p4 k$ F. D c/ Q& w
7 H5 c7 C# [' b+ [" q4 u/ O8 t # H) W( D6 k' V( K$ G
|
|
[复制链接]
