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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
/ C, |) q+ d" Q8 r if <condition> then
- Z2 Y" K0 w; y9 a( d; ? <statement sequence1>;
0 h. N2 [9 {1 q* Q w elseif <condition> then
2 | P1 x( Y2 q, K* c" k# [ <statement sequence2>;: ?+ {& U" w8 g: Q9 b& d
else % k. V. C3 O7 n# {, d
<statement sequence3>;
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如果分支比较多，用：
; m& t4 k/ ~* D1 s, o* Q8 J7 `- \ inspect <expression>! I9 h _1 a4 R& g6 q
when <constant_list> then
; o5 H! k" c( i2 W1 V! j; @! S# _ <statement sequence1>;
; Z3 u2 \8 E7 h M$ c; t3 U4 d when <constant_list> then% G$ y! L0 Y; U8 S% [* `2 x
<statement sequence2>;5 X5 G4 W c$ i' V6 ]' Y; w
...
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<statement sequence3>;
3 K+ M. Q8 s1 X7 I- `end;( F, d: q* X* f' S
. I7 X+ e5 O! N8 l% U, q- i8 ^: z, ?
2循环语句
B) ~0 [4 b( q/ p (1) from <statement sequence1>+ s t/ P I* e) h X! m6 b% f$ V
until <condition> loop
; f- s$ m* y3 V1 u6 r4 N0 v <statement sequence2>;3 x9 t2 H& p6 {& T) O. q1 K. ^
end;
5 |6 m6 j" ]( F3 I (2) while <condition> loop+ T! _2 O0 i- E4 ~9 `- K5 B
<statement sequence1>;
* `6 w* ]8 w$ B4 z7 i end;
3 f7 i: @3 j' ^ (3) repeat
' l$ I& v9 F* ~, i0 q* x2 Y <statement sequence1>;' t; e3 b, ?$ k/ M9 a' x
until <condition>; T1 X* G* J4 q9 }1 N% |
(4) for <condition> to <condition> loop5 M1 b% c! C, w" M
<statement sequence1>;1 P$ J' `* h+ i9 i# @) j
next;/ U! F2 R6 h$ X5 V+ n1 ~
3中断语句
, M4 u/ L$ `. r waituntil <condition> prio <integer expression>;$ x* @& C( f1 j% Z% e
& k/ ~) H! U0 ?
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以上为常用的函数！. p( f$ n% x4 [) m) W- j
还有很多，如有需要我把资料发到你邮箱里 / K' j+ ~2 R6 f: H0 P' \( B% j6 ?; T
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