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发表于 2012-11-13 08:48:12
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1判断语句
6 W0 }, q3 R0 M. I if <condition> then8 A3 O( [$ |( t0 h
<statement sequence1>;* j# s. N6 c2 E$ S8 F! q6 P
elseif <condition> then9 C( g$ w5 s4 i& c p
<statement sequence2>;
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<statement sequence3>;0 }7 c6 v9 I2 c( r* {$ s* }+ f
end;" M/ X& E/ j8 L# @
如果分支比较多,用:
! ]' F8 A, K/ w# } inspect <expression>; o' D* a( h; v1 `
when <constant_list> then
0 U7 p$ N: w+ N <statement sequence1>;
% c# Z+ c2 O5 X& ]2 o% i6 p/ o when <constant_list> then; J- |8 j! B% C8 `' v
<statement sequence2>;5 c6 u0 T e Q) H
...
; v+ Q W% w4 J( V9 ^ else
' j. g; F6 ?, F; W5 H2 i, r <statement sequence3>;
5 V8 \2 w4 T6 w( @: _" v/ Jend;4 C/ F5 l' W$ h; q! Q
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2循环语句) l; P6 `, b# J) C
(1) from <statement sequence1>" ?6 U. E# |/ F1 h0 i1 h
until <condition> loop5 |5 a- [0 G' |0 `# G
<statement sequence2>;
* Z9 Z @+ j" O) L2 u1 |& ]! E end;
" j4 ^; A) t Z- j+ s (2) while <condition> loop
; g% k& y$ Z1 F5 g0 o" [% L <statement sequence1>;2 _- _/ _8 K* ^1 v
end;8 R9 \; {' [4 k+ c# z6 l& M) t
(3) repeat ! {. i6 `- k( U3 g
<statement sequence1>;$ ?4 |: {( U1 V) E# G' n
until <condition>;
- u& `5 ~6 W5 X J/ G; s" u+ F (4) for <condition> to <condition> loop# N: y: Y! U0 s, t
<statement sequence1>;9 [1 ~, j1 {! E/ i4 W/ k
next;
7 W" x/ [3 W4 r3中断语句 `% f, m6 N; Y- {; f4 w
waituntil <condition> prio <integer expression>;0 u, { Y2 k/ T" V; g& k
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% a" p5 W- u) C$ c' y, d a- ]
以上为常用的函数!
1 p! v& R* T- C7 a8 O q还有很多,如有需要我把资料发到你邮箱里 ! I* @# p% }8 i
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