|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
$ y, `2 ^4 n' ]) f# d) j; [0 w1 q; F if <condition> then- y) o$ H: ]+ Q7 j, q* r
<statement sequence1>;4 T& H& E$ O+ p3 o
elseif <condition> then& u) b$ L0 [$ L: l+ i
<statement sequence2>;; K3 J0 e! ?/ [# q1 t6 I" t
else
1 {" M+ e% E% M7 r- G3 j <statement sequence3>;
/ U5 w$ z+ R2 J2 `* M end;$ P; x6 f& c! n0 G6 P+ K( b+ n
如果分支比较多，用：
6 v. P/ C2 F: c7 r inspect <expression>. N8 w8 y$ F+ Z5 b7 s( `; N
when <constant_list> then
; ~1 z& x0 }: V, J4 c4 \ <statement sequence1>;% Y6 W9 L: t O/ i: u$ `
when <constant_list> then
* A* |. O I6 l7 E <statement sequence2>;
3 s" V$ @4 c' w" r ...
, C* R- {9 e2 o, X5 ]8 S else' y4 {4 K- [7 K3 d% g1 |, q4 r' L
<statement sequence3>;
7 m' {7 T3 h6 V6 \5 Q8 ^, Oend;
& S- Y# U. u+ q7 b) D7 e$ |& A
/ o) d% q+ B! ~2循环语句( D6 U/ t5 P# q" u/ ]7 a
(1) from <statement sequence1>
2 _. ]; p2 z$ g/ e0 m6 Z+ Q: ?7 y until <condition> loop
, H) f; D9 t. U- u0 I3 n <statement sequence2>;
, S# J" C' v" k5 K" K5 u, G end;; C( J* j7 F+ _8 P7 N' k
(2) while <condition> loop
: B, W+ t( h& ~8 T5 M# g <statement sequence1>;& M1 A( X- x" Q9 z. T& |' {6 l# d( r
end;
8 F- p- ^3 d* j) S/ I+ h (3) repeat
" V: O7 S2 `4 k. E9 ~" O <statement sequence1>;7 @8 e$ t1 |! c0 q, f0 Q0 i) P5 M
until <condition>;3 y' Q% I2 j, I% J& S, e8 s: }
(4) for <condition> to <condition> loop
- L1 z4 B8 U3 _$ r <statement sequence1>;
a) P9 W7 h" \9 j5 B6 O next;
; d1 u3 ~& E% O& U3中断语句; Z3 \5 y. i* c- _6 ~0 [9 X3 c
waituntil <condition> prio <integer expression>;
& D- n* N8 J3 s% l/ B: n; l, t5 |* s5 s0 O9 l
! q2 T$ l& h! Z. P2 z
以上为常用的函数！
/ u: N( Q5 L: r" d/ }- A* l还有很多，如有需要我把资料发到你邮箱里 $ g" P" \( B1 o
. w, B5 t6 l. C" S7 A' `$ W: G% W& ?2 P2 l
# A5 o2 V& c Q$ q
) v/ M+ T* c; o# \7 L+ O: q8 F- w( Y
& d2 w; Z6 Z6 G: C
. B2 \5 K# [8 K0 h* s+ p
# p c& i/ l+ t0 X5 M& v5 J+ [* n; b; m0 S6 u: z
1 W0 [( b" m k, E \% O
0 J9 k, `9 ~0 w8 a" Z3 m
|
|
[复制链接]
