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发表于 2012-11-13 08:48:12
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1判断语句
4 q4 ~) [3 D8 O! p) ]! x if <condition> then
) d% {0 I9 Z% a% g7 B) S <statement sequence1>;$ I/ h8 E& b! c9 S9 |) v
elseif <condition> then7 D: ?4 J' z4 b1 J" U3 z. B6 @
<statement sequence2>;1 C |/ R! H- l- P3 `5 m: l7 ~. t9 m
else
' B& u% H e* V1 B/ e$ `1 o: @) ~ <statement sequence3>;# i2 v8 w2 q( P4 S& N
end;% K2 U8 x, D- X @, X
如果分支比较多,用:# T8 T+ X Z y7 \
inspect <expression>
) z% X0 {9 F0 P; g! l$ g1 { when <constant_list> then
* O3 B( B3 z8 Q) b& x <statement sequence1>;
0 F* h' @$ j' Y; l; w3 b when <constant_list> then
' k- v& d; C; e$ S% k <statement sequence2>;
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else
( P o7 c" x$ k9 ~/ p, \ <statement sequence3>;
9 D$ Z1 y9 W/ @end;/ e$ V3 V+ f, @7 s
; f2 |% Z/ D8 y8 S* L& a9 ?2循环语句
! e- D. v* S7 L' `8 V- r (1) from <statement sequence1>: a. w+ f$ {! B7 v
until <condition> loop5 D7 g/ E, q4 }# x0 m, d$ a
<statement sequence2>;
# y' K4 O' M3 m) {' x end;% e; @1 s9 x1 C$ W. O: a
(2) while <condition> loop2 B6 e) }0 A4 [; i- b
<statement sequence1>;
! p8 U5 q5 R7 p: p9 b9 o2 c. i end;
4 p6 t( s" B E& r; ? (3) repeat + m* P, s8 P, i! v+ r
<statement sequence1>;! N& c+ j$ ~3 h) i( W
until <condition>;" F- w9 D/ S8 {! E
(4) for <condition> to <condition> loop5 X6 x$ [" L2 ?0 y3 S( G3 s
<statement sequence1>;
; @7 ]5 i% P; p: a4 R next;2 t) I" j% ]1 o% G
3中断语句- m/ q4 s/ z# ?1 B# \
waituntil <condition> prio <integer expression>;
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以上为常用的函数!0 a0 X, O9 D/ c9 I G0 s
还有很多,如有需要我把资料发到你邮箱里 2 l8 |- r6 A0 p* A8 F/ v a2 T: a
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