|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句% w1 Q" J* t! R5 b( H
if <condition> then; d- v1 a# a1 Y |3 Y# f
<statement sequence1>;5 c1 q9 _8 _4 k1 a3 N
elseif <condition> then
8 w# P' k. O# {( d <statement sequence2>;+ m* C$ x! n* [( b
else r7 A% a3 J! ^2 i3 ?
<statement sequence3>;
/ O0 }/ `5 D0 ~3 c H end;# G! J+ [+ R& o4 e
如果分支比较多，用：
Y3 b: s/ K% Y6 K( {; [ inspect <expression>
& v5 }$ _: x" B" v( t+ w2 T when <constant_list> then
& t! q) R" l3 q <statement sequence1>;- p% @: ?& e S/ G
when <constant_list> then3 N7 F8 _4 V4 H/ p0 H" T' r( v
<statement sequence2>;
+ e& r& u" C; O: V* e0 j ...
! t0 y6 D/ M9 s q7 _ else9 ?6 w: e h; Y: ?& s. u* d+ u
<statement sequence3>;: J- H o; y' u$ U+ d+ _/ `8 |' r
end;. c: p0 H. P- t7 N
. j( U. M' ?: ~& U9 z# [2循环语句
) N6 F1 d# c8 e' t% _2 m5 R (1) from <statement sequence1>" w# O7 ~7 o N4 i
until <condition> loop( ~- R# V- z& t: }" ^
<statement sequence2>;3 F+ B) ? n+ M' x+ f2 Y& ?
end;3 N' b. H% f' v6 s$ B
(2) while <condition> loop
1 C# a8 ], G1 D <statement sequence1>;
1 g, s e. M; g) S+ A1 ~2 F end;
! d) L4 f" M1 q, T, m6 G2 S (3) repeat
- o% A! M5 k( B+ p0 ]. e0 U <statement sequence1>;
3 Q! R" u6 ^& N0 [7 U5 f9 j until <condition>;
% L8 L4 [& J* Z T( d, A (4) for <condition> to <condition> loop, Q% Q6 l1 V# F5 R/ c- \) T
<statement sequence1>;
3 l: ~9 i5 r9 h' Y8 t& F( B next;5 `/ H* l- p( P. L* _. J
3中断语句' F% R5 p9 d) Z L5 w0 t1 M. C( f
waituntil <condition> prio <integer expression>;+ g: I x( x) h/ P% R7 \( m
, W5 m2 y* q$ I3 ]3 W5 p
4 _" O5 l+ l3 X ?# L. q6 D* l# d
以上为常用的函数！- ~ O |" _ E8 Q/ N
还有很多，如有需要我把资料发到你邮箱里
; P3 i& d, r. n' F1 ]
& D) R# Y0 A3 f8 x2 ]# i; g' M
5 q& E: @% R c) b7 C# o* P8 {. m
. O5 @$ g1 S- Q9 F5 g5 @
+ l, j8 H$ P0 a8 @4 n' L
5 z9 o2 u9 q2 G2 s& ]2 |9 E3 o
! E0 w6 `4 G5 R: T j) E6 i) N
+ H _+ V2 E# g9 r, v7 O
; m c, C0 _0 p4 D# j
& p: X( E n; H' |- M7 e7 r |
|
[复制链接]
