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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( J) F# u2 C" u2 h% \
if <condition> then
) F' A1 r1 f2 ]2 A, ]' n, r <statement sequence1>;
9 Q3 g7 F3 g% s. k5 c elseif <condition> then
+ n; U# ~3 C. I4 b/ [; W2 ? <statement sequence2>;
0 l) d! q) J- r8 Z1 [7 r' S else
( F7 d) J; c' T* h4 W( n <statement sequence3>;# a8 V+ _2 i' t5 y& y
end;* x- k% h) q+ p# d8 v) }
如果分支比较多，用：$ z4 P- s* J' s% l7 ^
inspect <expression>
$ S, a' J$ H( S7 O% X" b' Y when <constant_list> then: y7 H' e4 P, x, U' o4 |! a/ ]
<statement sequence1>;. D" i1 m0 d. ~- i1 _4 t
when <constant_list> then
9 |* z b0 R: B, H8 O0 ` <statement sequence2>;: {2 H+ C! e, a& p: z! k1 }, a1 ~
...8 [9 D. x6 J, `4 u$ X
else8 I& y$ T0 j. B* q# h/ k3 s
<statement sequence3>;$ x2 `. b m) s9 t
end;
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2循环语句
8 V6 t6 R3 z) f9 t) g (1) from <statement sequence1>( Z* i0 d. ]7 ^9 q8 z
until <condition> loop
) w. E, ]. ?& y$ _! p/ o <statement sequence2>;' G- d0 h8 }' M2 @1 v0 Y, d
end;
; U$ i6 l0 w$ ~3 O+ P* f (2) while <condition> loop
( ~7 I) T5 T1 }$ w+ v <statement sequence1>;
# \% g; u+ m; i9 y+ h( H3 k; e. Z+ U0 e U end;
- R- }6 O5 ]8 i K. v; Z. a+ S4 A* A (3) repeat ! y2 B* A% v* r1 v( v) r
<statement sequence1>;
4 f0 n1 v3 A5 X. e until <condition>;' u. c( _: L/ \" Q5 Q( U D
(4) for <condition> to <condition> loop' M( w9 ~* p4 ?( T n
<statement sequence1>;
6 Q+ y1 P2 x; D- l9 o next;7 O6 F. v! l8 d
3中断语句
7 `0 { R8 K/ X! k ~ waituntil <condition> prio <integer expression>;
( i* O J1 f4 c4 i& i) z# S( ~! m0 _8 V. G6 y- G
1 }5 b$ L$ }: B! Z* Q
以上为常用的函数！3 g& q7 t( I! {- Z3 |2 q
还有很多，如有需要我把资料发到你邮箱里
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