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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
9 t6 Q5 i+ ?- s. U if <condition> then) M/ c# f9 n* b- H1 @
<statement sequence1>;
9 ?! b i4 j. D% ] elseif <condition> then
1 q9 A. r3 ^$ f" P& m <statement sequence2>;. _/ u4 l" d2 i; Y# V( Y/ ]
else
! b4 F; B8 Z5 F1 T" ` <statement sequence3>;
; v# Z9 y" u' ]+ U" V# w, z | end;/ B. ^: x# A, F$ f( W
如果分支比较多,用:
' V& e$ b+ x3 W2 } G# x inspect <expression>5 ?, x* S- c9 l4 G
when <constant_list> then
% X' Q y, k. K( R- V0 N4 Q <statement sequence1>;
5 ~8 q% O4 i' g& y* n' C9 E when <constant_list> then
V: c L9 `$ d" p( ~, D% q <statement sequence2>;. I- C+ ?& f% V* x( {+ \* r, b
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else7 G2 `& m- g( _& q1 f
<statement sequence3>;
; C) c+ f7 E r) e6 a! kend;
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2循环语句. s& J6 ]( r3 B, K$ D' ? S
(1) from <statement sequence1># {+ k7 T+ a y* _9 z. e
until <condition> loop* A D. r9 B% N+ n$ m
<statement sequence2>;" h3 z- X. e' G6 P" J9 O
end;
$ Y8 n4 m' W% O; |1 s8 h: o$ v1 } (2) while <condition> loop- W& I. T6 Y1 E, }- o( a
<statement sequence1>;! {0 [( a! a% F3 R
end;. [# w J$ H, C# c( \& V
(3) repeat / T2 j! f- b+ X9 m
<statement sequence1>;
. J: X. X$ F) Y# ]% g: p until <condition>;! d% Y l @1 C6 M! A
(4) for <condition> to <condition> loop/ m4 _& v9 G( o" o8 w6 [
<statement sequence1>;
2 E" m& C$ _* f3 A" B9 a next;/ u/ O3 h3 {( c/ A) `) K
3中断语句$ \/ _, p7 W' K6 G# P# M! ?& T
waituntil <condition> prio <integer expression>;. F: C$ W+ [2 n# _# }
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以上为常用的函数!
8 N ?/ b7 C" z6 i5 n+ U( R9 ]2 Q1 ? \还有很多,如有需要我把资料发到你邮箱里 + H* F: U. [& H3 {6 r
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