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发表于 2012-11-13 08:48:12
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1判断语句8 |: r+ e3 u; Y/ F1 n
if <condition> then# J1 g: G/ i$ N: w: s3 K8 i
<statement sequence1>;4 b0 y! f) z" K: }6 A. i
elseif <condition> then
% K: d9 g( B* \1 I9 g* w <statement sequence2>;
& D' X7 r/ J' x4 m" N4 [: P% D. O else
7 i2 l. C' [6 N1 n; K% Z2 n <statement sequence3>;
6 R+ ~# K& k1 s end;4 \2 L2 W; M$ ]* Y
如果分支比较多，用：
- A6 r$ o9 T5 k9 m inspect <expression>
* _8 [# [+ X/ v6 D3 g when <constant_list> then- @7 e4 W4 e# L7 c# f
<statement sequence1>;* w7 t! C0 @1 \, I7 n
when <constant_list> then
/ U4 Q/ `1 O$ ` <statement sequence2>;: i' F5 d& {/ U* I- `
...
@0 f3 {. }: w, p else
7 ^) n. l/ ~- l3 j' e5 p/ q <statement sequence3>;
, K# a( `: r7 i2 {' G6 _3 [end;3 Q& I' F; B1 F# u/ T4 z
, E6 Z' ~, ]! i% m, j; E0 n5 r2循环语句
- R, E8 @ ~- x9 {+ i2 E; U0 Y; g (1) from <statement sequence1>
, _$ Y6 `0 Q( N$ }& _9 E$ A until <condition> loop+ |9 L* s2 q1 p; ~9 k
<statement sequence2>;
2 `/ h' f) `( v5 O. a end;
. B L2 [4 T# V. K P' v: y (2) while <condition> loop
. Z/ n" b2 i! f <statement sequence1>;
" s/ G5 F) w G end;: Y$ L! @; b6 Q
(3) repeat 6 ?! b* q6 \' S2 Y; [
<statement sequence1>; `7 g$ U e0 `# Z
until <condition>;
/ B- `5 ^) E: E& ?# x, O" O! W (4) for <condition> to <condition> loop9 B4 S( V* r/ l9 e/ v3 `
<statement sequence1>;
7 [7 w x5 c' ?, t) Z8 s next;0 N5 b) u: U e$ l7 Y
3中断语句
4 D# g; S: T, j# G' S; I. y waituntil <condition> prio <integer expression>;3 i4 D/ M7 R3 W0 j: L
0 R8 n* V5 Q V! R1 E4 O/ f. r
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以上为常用的函数！
% m+ F b2 M& [4 h还有很多，如有需要我把资料发到你邮箱里 ( ~, M) X1 K1 E9 Y& L& a5 e0 Y2 N
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