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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
6 z+ M. O6 D4 g) ~" g" W9 O if <condition> then4 U* {4 A1 H2 d# o# D/ J6 @5 k
<statement sequence1>;+ }$ b; ?& D; h; P5 y# B( a! e
elseif <condition> then9 c$ t/ R9 d, J0 i! f. R, R* C
<statement sequence2>;
# R& I5 _* q3 |! w else
$ m1 u* r; Y& a: K$ D <statement sequence3>;
) X/ t3 L5 c+ l4 ^' I @# J1 i$ t6 b2 G end;
' M0 A- G @- Y% b如果分支比较多，用：
* }& J# d0 J( P6 V5 q; ^! A+ R inspect <expression>
1 c- t: L: J, O" c; I when <constant_list> then9 U- K7 O" u+ W3 v, @' c
<statement sequence1>;
! r; y. R( v: p6 O" a" O& f when <constant_list> then
6 T/ T* T4 _4 L" [( Z$ R, X <statement sequence2>;
9 l0 [5 z. O, C8 t$ m- ]! n ...+ _- j! A( x2 P) M+ ~* f4 m
else
1 C- o/ J2 d$ O) {4 a# \- q <statement sequence3>;
* U' m1 A" E$ O1 N' l$ p, n$ @end;+ h, o. i z, q: {
B$ _! a% @, H$ X# \
2循环语句
$ P c; T4 t0 {; a1 b, P (1) from <statement sequence1>8 m7 L$ @9 P1 i
until <condition> loop
8 o) b% a/ z6 F0 U. k <statement sequence2>;6 O* D6 N) I* o4 Q
end;8 {5 r7 s& }) n0 r' b/ T
(2) while <condition> loop" r: t( k7 p, I* R# w+ s
<statement sequence1>;
4 L4 f/ H" h% o4 T3 o( j end;4 Z5 O* H! t2 E; W9 o. D8 Q
(3) repeat
( f* t2 S. U+ l7 q/ r0 { v8 g9 j/ m <statement sequence1>;
) P) s( h8 T6 |& k8 Q until <condition>;4 \6 i+ _; p$ v: X" C0 {+ }
(4) for <condition> to <condition> loop
4 C" L5 H7 f6 ~8 ~+ s. u3 a) t) C u <statement sequence1>;8 H6 S! ^9 Y1 x6 V- \/ L9 e
next;
6 O- r* @1 j2 P; ^9 @8 W3中断语句
o6 o) I1 a2 ?2 `( ` waituntil <condition> prio <integer expression>;2 R! M: D' S, Y8 r. k4 e T3 o
3 k% s& b% `1 g- l# |* I
& ^( f% K/ o. `8 H* ~1 ~- _以上为常用的函数！
; d$ w D8 L+ B- K, F% \' \还有很多，如有需要我把资料发到你邮箱里
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