|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
6 a# ?" }& o( B6 ]3 C' y4 X d: C if <condition> then- A6 d; j; `" m t- N1 z l: @7 ~
<statement sequence1>;* ]9 n& F1 W, g8 H0 Y- z! z: N. v
elseif <condition> then
, i" {: J& s4 m$ F0 N <statement sequence2>;; |- V$ [! x# G! B' b) |
else
' [0 v% ]! B+ Y8 l, l# S3 [ <statement sequence3>;, e2 W7 C% G. \8 S1 |: {
end;
; P5 g0 k' `1 B& h. k0 P+ u如果分支比较多，用：! v4 [+ s! t9 f1 G) q
inspect <expression>
! v# z& l$ P6 U: j# r- H7 ^ when <constant_list> then
3 W! A. ?/ j5 e1 `! s* p7 a <statement sequence1>;
3 d6 |6 c- X) S5 t# T when <constant_list> then
8 k( N( v' A8 [: r: L% ^ <statement sequence2>;
/ O3 U: |% A8 E" \$ C ...7 F7 e' }$ H; u& O, [! }3 J
else& F f9 E" |) f" M- C* W0 {
<statement sequence3>;+ e. B( W; [* G- T! z' E
end;
7 S2 P) Q# u- W; B0 D/ P& w1 @" Z- ]9 h: @0 m
2循环语句/ Q! h# o0 H# W N0 M9 b# [
(1) from <statement sequence1>: @/ F7 ?3 z0 S5 U# l, q2 |# ]
until <condition> loop
% _6 y/ P- i1 @) A <statement sequence2>;
1 q* O) M) o1 O _& h9 E end;
: ]- W" l, O, k; {; i3 s; K6 o (2) while <condition> loop8 p9 T, w) E% B/ V& D
<statement sequence1>;
; }% @6 z( B9 Z; ?7 Z+ {( O4 w end;
- K: [# t5 D% W; E5 f6 i (3) repeat & `( u# s: y; ~' U1 i
<statement sequence1>;* H$ z& K5 j4 G8 j& h5 t+ @# z
until <condition>;. K+ v4 A+ M3 v6 c8 w2 n4 V
(4) for <condition> to <condition> loop
* B# d0 y* d1 H <statement sequence1>;
3 K( h# M4 |4 a! `8 D2 _2 [& \ next;
! Y$ W3 d' h) u) ~ l. g3中断语句7 L6 b$ k: L( C8 Q# y j
waituntil <condition> prio <integer expression>;8 w6 e9 v) Q8 u7 ^2 u; r
/ s! J$ t; Q# z: O! ], t
+ p$ D5 y8 T1 s$ o; Z' o
以上为常用的函数！
( D/ Z- t1 }3 |/ I6 w还有很多，如有需要我把资料发到你邮箱里
. [) C0 [+ S/ h
+ O/ g5 ^) y! D' Q* x- p5 {& C4 l- R
D& O- I; V1 k' { R
1 J, c' h- z( k( t4 z8 s4 n4 B0 V
3 i! v+ M, E' l
/ a# Y4 n; [6 P7 R7 r( H
) e# L* b2 _. C3 V- L ?0 Z0 p2 _
% G8 f9 c( r4 X9 m+ I# t |
|
[复制链接]
