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发表于 2012-11-13 08:48:12
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1判断语句* Y: ^" Q! r! `, b% b4 R E/ T! b
if <condition> then# z% h7 d" O0 m V4 o7 \
<statement sequence1>;
( X4 u' ~' z2 L# u elseif <condition> then) A8 ^9 L/ S( P1 h
<statement sequence2>;
# u9 }7 p$ V" U# ?4 N else
& P$ T t) A; l( [+ P; `5 a' T/ s <statement sequence3>;# z6 Z0 n4 [8 i7 U' Z, f( V
end;3 F8 p7 L% A3 _8 f' R! d
如果分支比较多，用：
1 U7 A! k. M: c# ^: i) b0 b inspect <expression>
9 @: m9 P% s" |* B# g2 T: R/ o" Q when <constant_list> then
3 h* J! [) E7 Y <statement sequence1>;7 [* F' G U+ G" Q5 _3 Y
when <constant_list> then
- K6 y: J3 z7 `! O$ Z <statement sequence2>;; [8 e# T4 e- j% y% I2 D
...& x2 H$ ]2 s6 X* t. ?
else
- V7 M2 S* ]+ X! U9 E4 }& ?* { <statement sequence3>;
2 z; G$ r6 h( I' }. \9 `& Yend;
{5 ~" ?* ?& j0 t& k
; L/ b6 `. _+ M0 T9 t+ Q2循环语句8 Q$ w4 f% h& \: L% d m" ^: o" R
(1) from <statement sequence1>/ L! Y! B9 f$ @' m" y% o
until <condition> loop, b& v; Z! W7 ]" b Q3 D, I
<statement sequence2>;- D8 I9 B5 q2 |! n' b0 B
end;4 `# t8 Z y; ~& w5 U# ~ P: u1 w' @
(2) while <condition> loop( t' Z5 |' t3 v
<statement sequence1>;
$ d3 h, F1 q' Z8 p+ i3 z2 V1 R end;) L( M, \, `9 }1 P& U
(3) repeat ' V# f5 m: B/ d; ~6 A7 ?5 B6 ?
<statement sequence1>;0 @3 d& R1 |, g. d1 @) ~
until <condition>;
8 }8 ?0 ~5 l2 n+ H4 s) f (4) for <condition> to <condition> loop
: b- a! V& T- { <statement sequence1>;
! a8 l* E( n" o& l, G8 Y next;
% G! d/ V# m: u* H2 c3中断语句
( t7 @1 P, N, y! T/ |: P waituntil <condition> prio <integer expression>;% c, ]; _9 e' [3 a- k, J6 P
( }8 f( j$ w$ e. {2 B1 j* m
6 a# o( T+ ]. v# I; G' d I- q: R8 e0 h以上为常用的函数！
* [' L( @' k% c0 S+ y: a9 \还有很多，如有需要我把资料发到你邮箱里
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