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发表于 2012-11-13 08:48:12
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1判断语句4 }* Q4 v$ g: O# J: m% `
if <condition> then
$ Q$ P Y( v, W; M) N2 o <statement sequence1>;7 v2 P% S1 Z+ P3 T0 K
elseif <condition> then9 x' y5 Z% b9 _ H+ P3 ^8 i
<statement sequence2>;. ?, Z2 y( O8 w9 D" u6 ?2 B
else ! |' v; m- e, |2 `3 \6 _
<statement sequence3>;1 F2 z% E2 H7 y4 }0 @/ u* i: y' K3 t
end;1 e8 q, W. o# U* W# \" M
如果分支比较多，用：
) i4 K" _2 o- ~" v* k inspect <expression>
' {) m. m! u5 i. I( p when <constant_list> then
2 R+ e B% Z' D$ _# k; ? <statement sequence1>;
/ ]1 |# \/ C! Q% \* q5 R when <constant_list> then
9 ]( B# D$ b8 d5 E+ s/ j: W <statement sequence2>;' z; @5 `1 }7 @2 h# \2 O' u
...
( I& e! d- C. Z7 s else
4 }. U# @5 O! L, f1 L# ^ <statement sequence3>;9 D8 B, d, v/ `2 H) n% c
end;/ M0 ^" G( S& S
7 p$ x) X) A& t7 S2循环语句) J% G, ?) y. r* u$ C5 L. M
(1) from <statement sequence1># [( T4 W& K. \9 B6 x0 O( t
until <condition> loop
" w- ` `+ [. m g. n <statement sequence2>;
# M- l/ {" M }5 j3 C! | end;( ~+ g+ d; `, @/ U, z/ R d, E
(2) while <condition> loop0 d. R% }9 ]9 k$ C' z9 e8 C
<statement sequence1>;
& `# e, h0 j( h% o% b+ b D7 i1 c6 I end;9 p$ J/ W* d' E
(3) repeat
) c4 ~4 k% \: J, a/ _ {; u <statement sequence1>;( Y& X1 X8 N1 @+ n5 A4 e* S0 K/ Y
until <condition>;1 Z ~) A2 L4 j
(4) for <condition> to <condition> loop
0 c8 f' q* _) c6 |1 U <statement sequence1>;
3 I9 o; p, R$ y( ^) c# P" H next;
: a, R0 W. ? I2 M1 P5 f. p/ o3中断语句
5 V$ V8 Q( r9 m; k* [ waituntil <condition> prio <integer expression>;! t9 V: Y2 g$ h, A0 I. @; |1 @0 c) X
4 j% f: a, M6 Q* h. Q P' ^9 I9 S+ P& P& N) q. L
以上为常用的函数！
$ U4 d. ?5 M: u' ~4 s还有很多，如有需要我把资料发到你邮箱里 : x6 N8 `5 K: K7 Z
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