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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* h2 C; @3 u; _
if <condition> then
+ M9 I! [6 l5 C! g4 m- a <statement sequence1>;
: v. q" ^( M* z* p2 i elseif <condition> then
% [; D, E% S+ o" f+ w$ b2 l <statement sequence2>;. e% K9 Y( U" n0 }
else , K( u" V* E& p6 ^. ^( L# V
<statement sequence3>;
* h- \- n- s6 ~, w! C7 e end;
?3 i4 p" i9 f' j+ M" S4 i如果分支比较多，用：
S. [( F; t$ y. j( C inspect <expression>* J% I9 \4 c9 d( |2 E
when <constant_list> then% m; t8 x( M/ g; q$ b
<statement sequence1>;
& U( @3 t5 X' O ~1 S5 R. j when <constant_list> then
% g0 N0 t& h9 W) ^* `7 ` <statement sequence2>;5 N% t1 A z: h. i S* \( s9 F0 o
...7 i# L4 k9 j" u# L- V) e
else
$ i- D, Z0 G- F" t( ? ^; j2 w <statement sequence3>;
3 F' p8 C" C! N' K. I& b- ]end;9 V- ^( E' b( b8 I
5 e3 {2 v; R2 F* D2 ] t2循环语句
& W9 r/ B0 K/ U! y, @" C (1) from <statement sequence1>/ j- _! ^6 w7 u0 x( H
until <condition> loop2 C/ \1 M9 @7 V9 E& z
<statement sequence2>;4 G9 W, q6 ~1 g$ P( O! f! G7 n
end;
) M T1 F D" N/ p& m7 Z (2) while <condition> loop
! D E* _9 Z8 x" g <statement sequence1>;" q) ]" {/ }4 m; t6 C3 n. j; h; m6 m
end;/ h8 w) T5 c. L7 L/ E4 C M
(3) repeat
/ N/ U" y9 z( O6 i% ?3 {5 ?' h <statement sequence1>;
' b: ~8 c E% o! W" J until <condition>;& e7 p2 H1 u) K, h8 L# }( V3 ~9 @
(4) for <condition> to <condition> loop# f" f4 _4 G" f) r: k/ s) F( C4 Z
<statement sequence1>;4 S& o+ L4 E6 H! _
next;
/ W/ x6 F* F' h \: L1 k- h% e3中断语句
0 }. O' G- i4 V0 l& Z! N waituntil <condition> prio <integer expression>;" Y+ L! _6 x6 h+ V& K
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* r3 E' T' W# ]; u6 ]8 T! X以上为常用的函数！
, R6 e) d( k! r. S" o+ h还有很多，如有需要我把资料发到你邮箱里
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