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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句+ f) w3 X, B. v" j3 d
if <condition> then
0 D; ^" V! A) o+ ^; V <statement sequence1>;: w& B! l' }0 E \; e
elseif <condition> then. H( V4 U: g6 e" _
<statement sequence2>;+ U6 f& P6 Q# B+ P' Q1 @
else % b" T% H# o$ H! }9 t
<statement sequence3>;
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如果分支比较多,用:/ |3 \8 N$ e& i& K" I
inspect <expression>
7 \! B% u! Z, S% j when <constant_list> then
/ e) P8 \' W: h5 @: o <statement sequence1>;1 T- R$ Z5 g7 S" a, ?6 }
when <constant_list> then9 d% C+ y+ J4 \/ B$ E3 B0 L
<statement sequence2>;3 @" x+ l& q. f/ y/ }
...
" |" m: e) h' H9 H5 N else
0 K# U* O5 K# J* G: f' R4 b <statement sequence3>;
' x8 w5 F: l X( V* Cend;
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% m( v; o7 B9 P/ r5 s7 Z) ^7 N2循环语句
( [! r* [* N- h% i7 { (1) from <statement sequence1>
' }/ n9 P& n! _. _- }" m until <condition> loop
$ k2 Q0 B. A3 \" D' m <statement sequence2>;0 I( f5 [9 h. I, x1 q$ V& F3 C# p
end;
1 B" F/ u! Q9 D, F+ M (2) while <condition> loop, c; T( `( Z# [- b m4 ~
<statement sequence1>;7 t7 {4 _1 Q+ N8 K
end; `! E9 ?: C3 |% _5 J
(3) repeat 9 x. [1 N: X0 P
<statement sequence1>;
( {8 @9 z% u6 |& H until <condition>;
4 |0 x: B- ?, ]; x (4) for <condition> to <condition> loop( E' V+ i% R4 `
<statement sequence1>;. m4 T( I4 J( P; a/ U( K
next;
2 r3 J* |1 F2 j8 w3中断语句* p1 J6 x9 r( ^% t
waituntil <condition> prio <integer expression>;
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% a- k& ?1 U r
以上为常用的函数!) s! v' ]1 H8 c3 @8 {
还有很多,如有需要我把资料发到你邮箱里
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