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发表于 2012-11-13 08:48:12
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1判断语句0 _; y: V9 L: N4 A) K: a$ L- W
if <condition> then8 K1 B8 }# R. E$ ]1 C1 a P7 i
<statement sequence1>;8 C4 }: U W0 s' h- _2 {
elseif <condition> then
/ E; F2 M3 p: r, C9 H: `) o- I <statement sequence2>;
; J2 s, U V$ ^3 _ else
# q: }- w$ y' t: X <statement sequence3>;
( Y/ w! Z9 v0 J- X- n7 D" F2 g: ` end;
; @4 B9 U# H$ |2 a如果分支比较多，用：
( X/ u% Z8 f( [ inspect <expression># R" ` K- L3 U) E {) j6 @
when <constant_list> then! b6 e0 h5 I. q$ v+ P$ ?5 G
<statement sequence1>;
6 _. V" P2 `$ M1 S) O when <constant_list> then$ E. e8 |1 I1 D# h5 p: u
<statement sequence2>;
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else
2 U( o9 r; x6 ^' s+ z% ` <statement sequence3>;
1 V* X, E9 H! H- t$ _; B, tend;
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2循环语句( c. r# ?* O0 i2 S. ^% `
(1) from <statement sequence1>
0 G) \- [5 b0 S+ L until <condition> loop4 K9 b/ ]' h' ]* @ {
<statement sequence2>;
( U7 P" P7 B0 e( n* p end;2 k; J s. E# }' _" \
(2) while <condition> loop& i1 D; I, h* s, ]) k3 r9 C% ?
<statement sequence1>;; \6 s7 S) c8 K9 G" a4 J
end;; W/ L. l1 q1 t
(3) repeat * ^9 F* M' G. i% Z2 w8 _
<statement sequence1>;
2 n- w' E6 @: q; Z6 ? until <condition>;
7 T9 k3 ?1 w/ T2 U( ] (4) for <condition> to <condition> loop o8 E/ M) Y( e
<statement sequence1>;6 U+ B6 U8 v3 [6 V
next;' u7 } f8 A- Y
3中断语句& d# {$ @; o* X0 o; l9 i
waituntil <condition> prio <integer expression>;# h- E6 ]3 v. Y; S1 g
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7 J$ v( e! J# d以上为常用的函数！2 T9 W8 M5 I) b8 x L: j% g
还有很多，如有需要我把资料发到你邮箱里 ; ~: }$ v2 l! J$ b
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