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发表于 2012-11-13 08:48:12
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1判断语句
' M% L* p7 M8 n7 l" J, U/ Q if <condition> then. m$ ^" |8 X, w
<statement sequence1>;
" U {+ |4 Y' ` elseif <condition> then
6 G9 ?" p! N. G1 w5 o <statement sequence2>;: O4 a8 f' [& c" H
else & B+ \( u2 d* ]8 @5 _- S
<statement sequence3>;* z/ I+ `4 p& s0 ?+ O
end;) i9 Y* z k& M. ?! g5 x0 T3 X
如果分支比较多，用：
' G# q. n1 v& I1 R inspect <expression>
4 p) d0 \- d) K; @ when <constant_list> then; i- Q4 U9 k, m- n( Z1 P4 ]; g
<statement sequence1>;
) y8 ?/ \& f1 k% g& F when <constant_list> then) ]: M+ c4 A4 ^8 ~& {! o
<statement sequence2>;' @4 G% _# x/ I* M8 Z2 R
...
7 @: ? b6 j9 A3 @' P else
) y% ?" t( p' I" }6 Y' _3 P& s <statement sequence3>;: _; O) f& g& E! n' U# |9 {
end;1 T6 J* }1 \9 S% B! m% Z: N
) f( S7 E7 r. ^2循环语句
2 n0 P. t1 r4 i' q9 k, X4 M' I (1) from <statement sequence1>. s- o( O4 d' x
until <condition> loop
G! K0 A) q* R4 Y9 f <statement sequence2>;
$ _+ h, S7 u% n% \! V% R end;4 S, Y. N$ U/ e
(2) while <condition> loop
* n3 W# F9 d9 E! Z6 v8 M <statement sequence1>;1 }" _. K3 B7 Z9 [; _2 Y" C
end;
& F* f2 M8 v6 ]3 a8 ?/ t0 K: f) h (3) repeat
7 U) u, g+ b; y* b; j <statement sequence1>;
* A. ]* y3 r. f9 Q$ S" C9 O until <condition>;
" O3 k1 y. g! }7 m. o/ ] (4) for <condition> to <condition> loop
4 _" O) |# A p3 e <statement sequence1>; H0 b7 p( ~, ?! b7 v
next;
7 \+ u/ a3 f0 i# w3中断语句
. t" ?# m0 W5 R$ Q9 l waituntil <condition> prio <integer expression>;
( w! _0 i }2 ?$ v
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. y7 }: [$ g4 v/ ?以上为常用的函数！
* [. P3 j1 x( {, V6 K2 \还有很多，如有需要我把资料发到你邮箱里
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