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发表于 2012-11-13 08:48:12
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1判断语句
, L7 X: {6 N5 C- w if <condition> then
# L& V& z1 r1 W$ E' A1 B <statement sequence1>;* W7 R! h4 z$ V, h2 J: u; u
elseif <condition> then
- W- t* e9 D- B% a3 \ <statement sequence2>;: g3 C7 P O9 t, n, n
else : L! b1 K9 u9 j6 o" s
<statement sequence3>;- Z5 V% c4 ~8 r# q
end;7 m0 }+ R& A; B% i6 Z" y
如果分支比较多，用：
; C. h9 B* D6 r) N+ c i inspect <expression>0 ^) m l1 K, E8 Z
when <constant_list> then" t" r- b7 E# O, J1 V$ ~" ~
<statement sequence1>;
! [* s0 f/ ]9 ?- d0 h* O, O! ` when <constant_list> then
, t$ l* W- @0 e- G' P <statement sequence2>;
- l5 m2 |2 }1 f/ r+ f2 o) A0 \5 c ...
) X7 T2 C7 Y4 n. v/ k h6 Z1 } y else
( |* w; |4 D+ y! e# r <statement sequence3>;
$ h/ j; s( t# h2 R3 G7 `end;
* N; Y5 p8 G6 d) }$ D9 ~ o4 Q
& {9 l [ D9 E2循环语句& K( }" r% z4 P6 r2 ^: N7 Z0 z
(1) from <statement sequence1>3 F/ R0 w( ^7 f: ?9 w
until <condition> loop# X0 E/ N/ s8 ?3 G% M
<statement sequence2>;" I m- _) @' F# B
end;: e- A1 T& M/ A
(2) while <condition> loop
! U7 {. h4 N( S3 M/ n0 z <statement sequence1>;6 q! z+ ^: C3 j* ~2 a o, p0 ?
end;
/ x) e# a- Z5 q0 V$ R8 v. z+ w, U (3) repeat
7 X' |$ U9 e. R/ {/ {) k, H3 m <statement sequence1>;2 a8 r* _$ b( D, N6 o' S% `
until <condition>;
( J' r6 W1 R" P (4) for <condition> to <condition> loop" ]) ~# K( C- _; ?; N) ]* l; p
<statement sequence1>;) f. E+ k7 W h9 L- x' s; b" o4 |+ O
next;
* [& _1 H8 C+ b/ N0 C1 x3中断语句
& u' }) N$ v2 i$ c4 e waituntil <condition> prio <integer expression>;) U* _$ t/ W. u* ^" e9 R) q
2 I h1 k. H; A$ d0 j
* e. n6 u/ L. R1 o# w8 V以上为常用的函数！
4 P: ?" p9 y& g) M" y% W2 |9 I7 u2 v1 d还有很多，如有需要我把资料发到你邮箱里 % k( f* U2 V" e# U2 {
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