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发表于 2012-11-13 08:48:12
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1判断语句: k+ D! G8 l8 j9 z1 o( E
if <condition> then
6 R" |* V1 T8 Z0 v# Z* L( W, M <statement sequence1>;
! G2 ]# X0 i, s+ ~ elseif <condition> then
* `; _! x# g$ |7 X <statement sequence2>;7 s+ C m4 A4 ^8 t1 N
else - y: l, b$ s! I' {
<statement sequence3>;9 I4 B, E. ^# M- @& D
end;( |8 T; ?! V. R/ p' ?' |
如果分支比较多,用:
. d- } [$ n0 f5 j/ X inspect <expression>3 C# d; j8 |( f5 e
when <constant_list> then
' s% c, b/ x; u5 ^3 F <statement sequence1>;
8 O& y T2 Y( S5 L when <constant_list> then
' ]: n2 _( f* J* B% N n9 m, a <statement sequence2>;
3 L: p9 T- O$ P9 v3 k$ T$ j ...
. R. t, `0 A: b* d# h4 F5 T3 Q @6 { else
7 p7 ~! R4 b D7 P7 F/ X- | <statement sequence3>;, `2 [! m7 E! y% {3 K( U# E( P
end;; Q; G- J& a2 C1 j( E/ b. I3 Y
2 P. A; R8 h/ e# W, ~2循环语句
$ c, c7 b" }& l# f9 w- m (1) from <statement sequence1>
. g4 N% V+ B, ?( ?4 P; e: v% d$ {1 | until <condition> loop, v( G: d% g: j; P
<statement sequence2>;
0 h. \1 G1 U" M! d end;$ H/ P8 F8 z/ e7 C. b: K0 ~
(2) while <condition> loop2 z% F9 w: Q/ F) l+ T5 a+ A+ u, [3 y
<statement sequence1>;
7 \% q" T* l5 _ end;
3 K: D! R6 S$ `( L$ V! }$ p (3) repeat
7 X: m: k: A/ c; E4 N1 p0 \ <statement sequence1>; \, U3 L/ `! s6 F- E( U, I
until <condition>; s) n" w, R8 T& Z
(4) for <condition> to <condition> loop
4 O; Q z4 D+ B" j* e" | <statement sequence1>;# j8 U+ h1 R: x9 y
next;4 d! {) `) d, Z/ j+ p$ p
3中断语句9 _/ ^. a! L8 |! F
waituntil <condition> prio <integer expression>;) Z; P0 O7 o1 C
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以上为常用的函数!# ]8 f7 e$ I8 V2 F" u/ J' I
还有很多,如有需要我把资料发到你邮箱里
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