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发表于 2012-11-13 08:48:12
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1判断语句
) L9 }7 O. r# m; ]( H5 } if <condition> then0 [" T1 {, I0 r& a u5 W
<statement sequence1>;
9 [/ E$ q8 h* f" E+ s8 x3 ` elseif <condition> then4 i- E7 S5 `6 _: `- v$ R. p
<statement sequence2>;
8 m! r! B% P: ]7 Z" k" i( F! { else
/ z t% i4 e" @. c; v2 ~ <statement sequence3>;
7 ~% v' y) }. A. {$ m h3 n, @ end;
3 D- u$ \+ Y; K% ^如果分支比较多，用：
9 d3 }# R0 l1 Y" K9 t# p o6 ^ inspect <expression>
& n, A5 p) j6 y% z5 f when <constant_list> then* e8 U$ s0 i( w2 H
<statement sequence1>;$ _& e) M4 [& T+ x* H: j* y* k
when <constant_list> then
, T2 P2 O- K# i5 [ <statement sequence2>;6 D' j. `2 {/ b, W/ T3 w, Q
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else4 e7 T v! \6 V4 c' B8 _* F7 ]
<statement sequence3>;
5 m: t) B2 K W# k" t+ [2 qend;
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2循环语句" }3 u. c$ Y- a/ f
(1) from <statement sequence1># Z: ^# i5 C6 v4 v7 N. _2 ?
until <condition> loop
* e/ z2 G) c0 w <statement sequence2>;( D: t y% B9 O+ }) _ l
end;
/ @' U' \% X/ H6 |6 K0 p& r5 p; s (2) while <condition> loop
" x- y# n/ z& y* @7 e( u <statement sequence1>;
( H1 y& e/ W A- {3 B# a end;' X/ L2 c9 D" ~+ d. V& g7 a
(3) repeat
8 A3 V; n3 a0 ^$ L5 h: @7 s- o <statement sequence1>;
% k2 E2 X1 j& o! m- B8 a1 o until <condition>;
( J* A: b6 u( G" U: M& u; i (4) for <condition> to <condition> loop( x( {7 \" J. R" q8 I: z0 P5 D, A
<statement sequence1>;. o3 F4 V8 u! t
next;0 ~1 D* ~ V- D# x9 D) D" n, s- m: v
3中断语句
$ `& a8 D( X& P5 K) r0 g waituntil <condition> prio <integer expression>;7 V. a9 h. I& S, Q
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% j; G J/ c3 m3 [以上为常用的函数！
2 N) k. ?/ F* X ]+ I" h% W% D还有很多，如有需要我把资料发到你邮箱里
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