|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句. G7 c2 H# r. ~8 R; b
if <condition> then
! N) ~# q" S6 Y6 K, i, Z <statement sequence1>;' r) @& t0 L* X8 Z$ N
elseif <condition> then$ o# a* ~# \8 o: v* F V
<statement sequence2>;
% f5 d2 y6 i7 t: |, e g0 g6 a& s4 ~ else 8 e) V9 [% N6 d
<statement sequence3>;
% g& {/ Y" K2 b1 x; n7 J2 \/ X: Q end;% A0 @/ \0 F0 L( J
如果分支比较多，用：
. z7 F% y9 @) s. s3 Z- B; K inspect <expression>
" N9 z7 ~: J& y) F when <constant_list> then' z# n( |( p+ ~# l
<statement sequence1>;
* \' O M c, H8 @- A7 ` when <constant_list> then
0 {; n, z7 A% a6 D1 `* M ? <statement sequence2>;! D$ m! [0 H3 ]6 E) J
...: ~3 d+ G# R0 b3 X
else
+ r# n6 s8 n: f! x/ m <statement sequence3>;
- S9 o( v. x( F7 |end;" j: m+ e5 R2 j7 b! Y
) x4 ]" @$ n( z" ~& Y
2循环语句
. W5 d' g$ C. x( `2 R: a3 |9 N (1) from <statement sequence1>& y9 d$ P7 }/ m2 I( ^
until <condition> loop$ s: U+ [) P2 [" x. T3 t6 O
<statement sequence2>; h/ U5 \ {! \, ^. k& G. b! h- A$ b: f
end;
4 |' y! ?. E/ r& w* M( N( n% Z (2) while <condition> loop
- a- L3 [# b5 k5 Q <statement sequence1>;( `% B- j- u& `1 B$ Y: T9 k5 k
end;
; k, `% z! U; Q' }+ I% d3 J! k) H (3) repeat n1 w: K4 s) Q5 H( H, O
<statement sequence1>;
# R: p6 h" E7 I until <condition>;
" Y" A/ w L+ @0 T! a4 F5 c- v (4) for <condition> to <condition> loop# W1 V2 p* ^ j3 i! R; D
<statement sequence1>;
% e$ L% z! y- E- A next;2 C$ c- d+ h* s" M% Q
3中断语句- Y/ `' w, v! i
waituntil <condition> prio <integer expression>;
* T+ C7 |6 g& a7 @8 P) @& k- T
, N3 J3 L }5 A" \- U$ n. q' B. Q0 x
以上为常用的函数！/ ^& @% x) \/ ^* w% V5 x
还有很多，如有需要我把资料发到你邮箱里 # q; }& h4 A3 r1 @- ^( ^4 Y
0 R' T) K3 ]+ G; ^
! ^6 Y3 e- v! O' A/ ?4 K9 n5 ~7 s* ~3 k8 B6 N. b/ N
8 ?3 m' o3 J9 [2 _. x7 B
: B3 \$ u' Y' J& ?# a, K, {( K, u( o
/ c' W$ r8 n! z7 S+ k$ M; W
, b: L) W+ I. }6 {- ~) b" D$ c* Q
" t' n. R& O& |# j# @
0 {- h8 h7 {; S4 H, W( L3 K |
|
[复制链接]
