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发表于 2012-11-13 08:48:12
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1判断语句
9 \/ S, l5 @7 k# L7 {+ u8 | if <condition> then9 v: Q0 V; c7 {! e
<statement sequence1>;3 p0 Q ]8 }1 j& T/ q/ e
elseif <condition> then( _- \5 {- m _: p
<statement sequence2>;$ I$ I$ Q6 w$ T6 U9 m0 g" U( K1 G3 Y
else
3 F) `. q8 U" k4 Z6 f) W0 z2 D <statement sequence3>;
& S0 O" y' l7 y) A1 R end;
$ i) e. H2 P* ]) }; Q1 }# c w, V如果分支比较多,用:( ~+ r8 W# a; G, o$ u' `1 N' o4 {
inspect <expression>
6 z' d7 I8 W1 n2 U' D when <constant_list> then3 _. b0 w& h0 n1 b$ t" X
<statement sequence1>;% M. m: C) `3 g& j- Y
when <constant_list> then) H7 m: d4 s$ w$ I1 g
<statement sequence2>;
0 G6 S0 c/ `: }! G ...
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<statement sequence3>;
" ?, Y4 P8 ]; ?, `( fend;8 _$ ?3 I* M0 M: h( Z: Y* }
5 }& M+ p2 D' Q2循环语句
2 o/ o4 D/ ^4 u- c4 m3 o# d+ E. E (1) from <statement sequence1>; `- M& ~$ _/ u4 p6 S' f8 u
until <condition> loop+ h, ?3 ?1 G: q
<statement sequence2>;
+ P* l: m, I% F& ?& S: A3 x' I end;& l3 v I' ?0 T ^, Y, o
(2) while <condition> loop3 ^3 W2 `( B, i5 f
<statement sequence1>;
' E4 j# d: W) y5 K0 g% K end;
9 \) \. i1 o" |/ N, T (3) repeat ) C2 |; n+ v) P& j& ]/ @, d
<statement sequence1>;
4 P X) Y& T: c1 @0 y* h. c, o; p until <condition>;
- ~4 ~2 @, E- R2 S3 A* v7 D (4) for <condition> to <condition> loop. g$ q! R3 C# B5 O$ W1 m
<statement sequence1>;6 `! {) v: U% N# U7 j3 A
next;
( ~, L% g/ a1 {4 r/ G/ u3中断语句
: p; u, t& p# a4 n& W, k3 X( h, y5 q' { waituntil <condition> prio <integer expression>;
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: D' r* U3 Z, o, l. ^* [以上为常用的函数! s( j, K0 Z& Q) h$ n4 k
还有很多,如有需要我把资料发到你邮箱里
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