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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
% Y' r5 V& E! W" e, u& P1 H if <condition> then" F: z7 J. T. b. R' ]% Y0 x5 W
<statement sequence1>;
G- [- Z8 ^ t8 R3 Y1 F2 r d- W elseif <condition> then" u$ b2 f9 j5 y( w/ }
<statement sequence2>; d! _" K! p3 z: u6 A+ E2 N
else
0 j7 `0 c/ Y# o4 T2 n <statement sequence3>;1 y. [- E. b8 k3 M& p- B; p) j
end;/ ]. }4 M; r9 s" R* e; p
如果分支比较多，用：* J2 y! s& f2 z) ~2 \7 z
inspect <expression>
: _. \$ i3 h2 o$ d# P: F; G5 } when <constant_list> then R; Q( X5 j) r" B* z1 n3 c- J
<statement sequence1>;
4 j' ]. q t, n! [ when <constant_list> then/ E: K) _9 I+ J1 O$ V6 G
<statement sequence2>;
% H! b. w( v! B- o! F ...
, l: z8 b* L3 o/ \+ s5 b5 q( _7 e else
2 _% P& F3 x; V* Y2 l G) v4 X <statement sequence3>;" |0 y* n! ^( ]9 g. ^
end;
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/ A# N) v& @0 F/ M) d2循环语句
) }& `/ h2 S- m3 S8 B (1) from <statement sequence1>! F) h" `: u0 u; @8 I
until <condition> loop
$ f% w% ^% U" \2 R5 v% g7 ^ <statement sequence2>;! E0 c: y# e: ]) i
end;/ H6 j- t5 \- ]! b. q) P3 r1 ~* |
(2) while <condition> loop
/ Z+ E4 T. E5 S3 F1 ?2 j. B <statement sequence1>;. k- ^ ^" c- j( g( p
end;
9 R& p4 z; K! O: A3 H6 K (3) repeat
/ N- A* _( F. H <statement sequence1>;
% e, x. ^0 e K9 p until <condition>; D2 r& i9 r2 [0 ?0 x7 Z! |3 r
(4) for <condition> to <condition> loop. e V; U0 r1 f/ Q" I) W/ I
<statement sequence1>;1 P2 [2 @' P/ m0 |% y# M
next;
% e& P4 L" _6 w u! S3中断语句
$ O, }2 n1 @# e! g. ~) E8 x% R waituntil <condition> prio <integer expression>;2 X+ j0 g; v* ]4 y$ Q8 o' m' i
" D, b6 O4 e: q k" o& b0 {
' y, X+ U5 O0 \, r+ m以上为常用的函数！6 r: f$ k( s+ r: g! J
还有很多，如有需要我把资料发到你邮箱里
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