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发表于 2012-11-13 08:48:12
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1判断语句1 c' J$ d+ R: W6 Y! t
if <condition> then% w4 n2 N$ ~; z! o
<statement sequence1>;8 G, w: ~3 j x0 z
elseif <condition> then/ q* {, ], o; l: T/ y" r- ?
<statement sequence2>;7 x: `+ r, J4 m6 c
else
* n+ U- Y# o( U7 Y" Q <statement sequence3>;
( @. Q8 h, b6 j% [6 j; n end;9 ~0 X1 }5 F/ X2 J8 s5 m0 ]
如果分支比较多，用：
' Q9 q$ H p+ Y3 ~9 H7 | inspect <expression>! g7 w' @! s$ u2 P
when <constant_list> then
, a7 O4 x8 h) S <statement sequence1>;
6 D1 c3 c5 J- B2 O4 @ when <constant_list> then
& ~' N/ U* L% }3 d <statement sequence2>;
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else
# f- P" @8 t& l) Q; b( u <statement sequence3>;9 e) w$ {- y$ N+ M9 ?! [
end;
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* N* P1 k: k+ ?& F2循环语句3 u$ X9 v1 f" q; `6 I% }( q7 @
(1) from <statement sequence1>
* t, V+ Z& j+ O/ S6 n; h( B' H until <condition> loop' R' P$ N7 l% z' v# b, I
<statement sequence2>;, p6 w% D8 [( e _; ^
end;# T+ g. D3 H5 [4 k
(2) while <condition> loop- B( _# E- T3 ~/ m+ N3 Q8 m
<statement sequence1>;
1 k* y9 L5 @8 X' o' S end;9 a7 L4 h# C2 F$ J, a9 J& Y
(3) repeat 3 C% I# _" M. f& ?# j& ^
<statement sequence1>;
7 n$ C7 N( H6 a8 d7 l8 n7 M until <condition>;+ a: n$ R$ w6 R T
(4) for <condition> to <condition> loop/ m! p2 w W, p/ [: r
<statement sequence1>;
- @, A, g' }$ b next;
6 W2 M* E& ]6 m+ Y3中断语句5 W! \; a8 G1 M* ?4 j
waituntil <condition> prio <integer expression>;
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1 q3 o$ b# O1 S5 N2 ^以上为常用的函数！) i4 ?; R& K! N
还有很多，如有需要我把资料发到你邮箱里 6 A+ L& u! h# V1 p( j. @6 {
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