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发表于 2012-11-13 08:48:12
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1判断语句
' P2 P: x# D5 i7 I" \ if <condition> then
0 i1 `6 u9 b7 q1 P8 t <statement sequence1>;0 F; _1 X; j, U. ^* n7 v7 [) K3 y
elseif <condition> then1 ~7 L8 h: c# b1 Y( `( u, Z
<statement sequence2>;
; s" V# L1 j: ? else ) _% R% k) b- s& C/ u3 K
<statement sequence3>;
7 c' W3 ~1 ]3 p; H+ o& {4 Q end;* ]3 }+ E$ e! `
如果分支比较多,用:
# w* S( X! n7 ]; s& J& p inspect <expression>; i' R, b& O; L3 D
when <constant_list> then& M6 B0 F. ^. f" [
<statement sequence1>;
0 c% a2 _ F5 y7 |8 @% k when <constant_list> then
; n6 G& d3 O' t5 v6 o% ~+ d: p7 s <statement sequence2>;
' \5 Q/ _: p1 K ...
# O" V+ x# b8 @' Z. Z) w/ w5 e else
1 A/ M+ j8 e1 y6 l <statement sequence3>;
: g: S. K8 i6 m9 m3 Q H+ D# Qend;. A% w% s8 {1 y' S' O, J
& ~& H' t5 A' Z/ W' W2循环语句+ A8 J& e* T2 [" f7 o
(1) from <statement sequence1>
& I8 h% Y2 w3 p0 d0 }9 Q9 z: } until <condition> loop
+ N2 C0 h( [8 k1 u5 G <statement sequence2>;
% F+ p) k# ]! `- @ |3 G0 W1 I end;
5 b& G V O( K) y/ y (2) while <condition> loop5 k& Q" K' c. ~0 V' b
<statement sequence1>;
% z( u/ g7 P5 |0 @! q) Q end;
9 |) k- |8 @. q (3) repeat # @4 L" k, M$ y2 I
<statement sequence1>;6 M {, S0 s6 E; |0 N6 F
until <condition>;
. J0 v4 L: F+ L# B" ~* u0 |( R (4) for <condition> to <condition> loop, T1 _5 i1 b, l
<statement sequence1>;" r0 U" t) q/ }; H0 a6 ?7 W' c( Z
next;- J* j7 m! C' _+ ~: G) Y0 A$ }
3中断语句
- h0 ?/ `1 b4 @3 D waituntil <condition> prio <integer expression>;0 D6 Q; n/ H3 A. d
# h* s n: U; b! {* b6 S1 W1 k- q5 v$ N
以上为常用的函数!
5 f2 Z- H8 U- v1 P- {5 [还有很多,如有需要我把资料发到你邮箱里 ! o+ ~7 `! q8 m# g7 |* G
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( a6 T9 d: y, b: n) J. \# U+ F8 O1 J/ N' ~
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