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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
( V* I& R5 d4 Y) T if <condition> then" R$ F' W/ c) R7 R' i5 j, ]
<statement sequence1>;& E* D& q0 b2 B5 w
elseif <condition> then8 _2 O$ z6 _0 m" U" D- [* {4 U7 i
<statement sequence2>;5 E2 @; q% _% G# z! E! y9 t
else
% Y' W+ }! F" c0 @+ X% m <statement sequence3>;& V N- ~4 F- H# w& }" G3 r/ I% y
end;. Q R: M8 ~4 Y2 R7 W8 S
如果分支比较多，用：
7 p* r6 r- ?( s* T0 [2 j; u inspect <expression>; ~1 Q% ?. _7 Q/ K- Q* q& O- M
when <constant_list> then& c5 ^* ]; y) l. R9 A _
<statement sequence1>;
, B) ]) w% z5 }5 b. @7 B) R- O when <constant_list> then
/ M# e; B9 K: } <statement sequence2>;& q+ T) S ^4 k4 [
...
+ v7 i" P5 k4 C) C. b4 q9 X: n else: Z2 E4 m5 H1 Q& K0 [6 _
<statement sequence3>;: t' |7 ^- e* `2 M8 Y7 h2 `. F7 @
end;
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2循环语句
9 R$ V6 _' ?, [$ [# P: h (1) from <statement sequence1>
! C$ |( r! H( {: [5 q" ? until <condition> loop
$ `! U! T. o6 u; ^2 p1 |7 u' _1 v% | <statement sequence2>;
2 y+ d1 i0 o# ~$ K0 q. ?- a end;
# B! ?5 @ I+ S8 V" X5 w (2) while <condition> loop
/ S; v; c( ?! m4 D <statement sequence1>;
1 S. ^' b: g; k; Z) Q. v end;
; R k7 b- N' R- ]. r# L (3) repeat 1 K% l5 W* H& S5 P8 g n
<statement sequence1>;
3 k9 r+ m( B% Y; p" [9 S+ J$ I until <condition>;1 y+ o& Z0 w$ T! a2 t
(4) for <condition> to <condition> loop
, N. N5 g! l3 r6 W0 f2 X/ @ <statement sequence1>;! D& t8 z; r# c' L* w) ^
next;
* y; r: J; R( r% G& L2 z3中断语句
2 ^9 Y8 J0 r; C7 x! P4 { waituntil <condition> prio <integer expression>;
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以上为常用的函数！4 y* d( _, e a# c$ g
还有很多，如有需要我把资料发到你邮箱里 5 A4 @8 C9 z# x
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