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发表于 2012-11-13 08:48:12
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1判断语句
3 m$ R0 R4 ~3 A" U- L3 H4 ?: w7 W/ ` if <condition> then5 S# M3 ]" F# z0 d+ v
<statement sequence1>;
% E7 C9 r, E1 Q3 k0 Q elseif <condition> then' Q7 T. n: f& h! g0 l: s, _6 b
<statement sequence2>;9 }* T7 l7 P, p
else
) v4 g7 v4 w7 n1 u2 A+ C, ` <statement sequence3>;% W4 g' ?$ T# f/ f* X- G, \9 @
end;) T" M* O$ P6 `
如果分支比较多，用：2 A& R6 n# S8 P* ]' E$ Y
inspect <expression>3 g5 ^5 H1 W% R
when <constant_list> then5 N$ p8 \% s/ i: v# k
<statement sequence1>;9 d, U0 [. W, z; E+ ~9 Y5 k
when <constant_list> then
. I8 ]7 A: [3 a2 ` <statement sequence2>;
G @$ m8 A$ w- ? z ...
: {2 j* t0 F% c# d6 D else% p( f! N4 P- ^9 o( n) ]* `+ w. P n' I' W
<statement sequence3>;2 u. J; i+ l8 r4 ?0 H8 Y3 v/ b) B! i
end;# |9 k: ]5 ^" v1 }: R
) ~8 O+ T0 R9 F1 K; n; u2循环语句: b2 }& Y2 m- Z0 G, L5 S I/ } M
(1) from <statement sequence1>
" M/ Z' n* ^' x until <condition> loop
& T- g9 w0 W. b( J; m! Y <statement sequence2>;
* ?+ H7 F; _3 Z- V' _5 G, z" Q end;
! p+ x# T8 o3 ^3 H$ T; t (2) while <condition> loop+ S0 v' s- k }* p7 H& ?( Y# j: n
<statement sequence1>;
1 C. W. ^& n. q5 U: _ end;; z: g7 O4 ^: o% j4 w1 F
(3) repeat $ l# a# l$ a0 r* t4 I2 j+ F
<statement sequence1>;
' o7 a9 a5 m2 g& ?6 E3 Y until <condition>;
5 P$ J2 w# V( n# Y (4) for <condition> to <condition> loop9 R( _( m9 X3 U$ U! I r7 B9 L
<statement sequence1>;6 M ]% J( n6 B4 w, s' r
next;
7 k, ]* B2 ^2 S; _, ~6 ~3 L3中断语句 `+ T7 |0 l9 }. H
waituntil <condition> prio <integer expression>;& z+ G) f( d) f9 f( f7 e, k
5 X# \ z+ g6 O, s- W& e
, s3 H; ]5 }, `$ P0 V# ~以上为常用的函数！
3 V" | c. f+ Q. B% f# l0 U还有很多，如有需要我把资料发到你邮箱里 1 s$ @* A/ [; w( Z W6 P: C
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