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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
# {1 S$ {- H& e6 r8 Y+ r if <condition> then) V3 E6 X' r7 g0 f' H' K
<statement sequence1>;) g z" p* f: q, b. \9 d
elseif <condition> then, F- }- x( S( s* d2 F& M- h
<statement sequence2>;
! j9 X2 M' L* R% @- ~' n$ w& \* J else
% I7 C- O4 @" l7 X! n: m# A <statement sequence3>;2 S( l$ n$ X7 G6 u. G3 L
end;8 K3 x* v9 _$ u
如果分支比较多，用：/ x" i. T( X- {; B( q0 u
inspect <expression>
+ E( w* A0 g3 R9 K& y! k: z; J, B- A when <constant_list> then9 K1 O& o( H/ F) \- S
<statement sequence1>;
9 V% L* O; o6 R& I2 s0 ?( v: N) K; y* e when <constant_list> then
5 n9 g3 z1 @( C- _ <statement sequence2>;* J* s/ j, K, ?$ j" H1 F; `# l
...
1 U9 F4 F& a1 B' p else
/ o/ }! M' _# H2 y <statement sequence3>;0 y1 K* |3 n( G) b4 g" _
end;
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2循环语句
8 ]# k' c6 K2 C6 i. a% A2 X' H (1) from <statement sequence1>) ^% ~+ e n$ }) r, z. J o
until <condition> loop, u" e6 _: e1 F" l
<statement sequence2>;! A% F8 K1 W8 g% Z: m
end;/ m% b% w( \, g
(2) while <condition> loop2 K; ~# Y/ T9 D, {+ V8 g# i9 \
<statement sequence1>;" a' [' a4 l, o N) K
end;( D7 G7 V# l( p
(3) repeat ) R, _4 j/ |) @' E$ `
<statement sequence1>;7 u$ N: f- L& P8 i3 I: Y
until <condition>;
8 q) y' m" e0 N3 y; g$ `! | (4) for <condition> to <condition> loop
* I. m+ s! ], e <statement sequence1>;
1 [& V# y/ e8 p2 H v& { next;
1 S0 `& F/ r1 N/ Z4 ~4 t4 b* N8 h: X3中断语句
9 z+ |" D2 r, v+ e! A3 z! J waituntil <condition> prio <integer expression>;
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9 p3 a& w8 J7 u以上为常用的函数！
* g+ E4 g* u4 N) ?) w7 T# a还有很多，如有需要我把资料发到你邮箱里 ' _; v6 ~$ E$ j2 q5 Y0 @, @/ c
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