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发表于 2012-11-13 08:48:12
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1判断语句% U S1 B ~: E- M
if <condition> then
' S6 O5 |; X' E) L0 u# u <statement sequence1>;
( [4 x8 ~0 t" s* z! t2 L3 x elseif <condition> then: a+ S8 n' U; }
<statement sequence2>; h. s; j; [2 A8 x! Q; O1 q
else ( Q0 {6 y1 u0 G6 A# |/ x
<statement sequence3>;$ i$ c$ J5 U$ K$ V9 ?
end;
2 f8 I. [/ a' ?5 i如果分支比较多，用：
" e/ _; {( N7 t0 } inspect <expression>
2 Z7 L9 k" I4 L% a* r: w: u when <constant_list> then1 F; l) H9 w& S& j3 Q3 p
<statement sequence1>;
9 p, l8 o) l- P3 V8 W* A when <constant_list> then( v4 x$ x/ S1 y3 R/ T8 j9 S
<statement sequence2>;; \" K3 d' Y6 q/ Y- n1 d1 |
...
3 p+ k8 {" O! R5 p% S else
, w& d3 H! K7 G <statement sequence3>;( o" k0 L R: F* B+ z& ]& O7 L
end; M% G* J; S6 z3 V1 l
1 _9 x$ c/ K- _ w$ R7 `2循环语句
4 A( F7 V" I( B6 `& [8 ] (1) from <statement sequence1>
) ]4 i9 U) [ `! e8 ?1 a# z9 A" _9 Z until <condition> loop
7 |0 S! e# j* l$ z <statement sequence2>;) C7 v1 a' ~0 O8 e" ]* _$ g2 {$ b
end;
& x% r# ~' q# T (2) while <condition> loop
/ o( Y9 G. V8 I$ \ a! ?6 b4 ?; _# c <statement sequence1>;
3 u" M9 O7 G0 o( V: x end;* P$ a5 f0 X) X2 b
(3) repeat
7 K& R9 x% Y7 ~1 f, C <statement sequence1>;
" r u$ f6 C* N' u2 m, h! A until <condition>;
- X" {" N. `3 F- ?* v (4) for <condition> to <condition> loop
, Z0 _- Q% Z$ l1 s9 p2 | <statement sequence1>;# T; X6 w1 v/ V5 b N% d
next;
- f% p& V9 s. r. _3中断语句
* A; w- w& J' e& E# h1 s4 v2 T waituntil <condition> prio <integer expression>;
$ }) r' o. c( S% y3 m7 I; U9 G. c& }
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以上为常用的函数！
2 d- f7 T, U6 V& {% Z还有很多，如有需要我把资料发到你邮箱里 9 e# l& _- _. b* J
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