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发表于 2012-11-13 08:48:12
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1判断语句7 G& B3 w0 _. ]/ `" e5 k u
if <condition> then
0 ` T2 m9 B. ~5 D I <statement sequence1>;
9 W1 l& L/ t3 z( ~ elseif <condition> then
1 J# s1 T1 B& [ <statement sequence2>;
: u+ O! t4 `. }( D" k% ~ else
) _2 C4 e) P) q4 ^$ B <statement sequence3>;
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如果分支比较多,用:
2 [0 `/ ]9 p! q6 \$ a+ s9 s inspect <expression>
w1 X9 H8 z! I& Y/ c* p" @* x. f when <constant_list> then
9 F7 w& @) }- ^9 g9 o# j1 B6 ^! F <statement sequence1>;% n7 k0 G2 r- C3 Y. b7 {
when <constant_list> then
: F* g. v/ }! t f% ]- r, P <statement sequence2>;1 w9 Z9 s9 Y5 l% ?2 U
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else
( d' d& s1 g" N/ J3 M+ q: f <statement sequence3>;* ]! q0 u/ B* J( |/ l* j' g
end;
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2循环语句/ Z3 ~$ n$ l! X$ i) q% e6 p" x
(1) from <statement sequence1>6 a3 {# A1 |) x& u- S7 V
until <condition> loop* d( ~6 c& @. f' F, n5 I
<statement sequence2>;& b8 D+ l$ j5 a( z5 B
end;) z' _8 p: s& J: ?% I7 Z
(2) while <condition> loop7 Q6 G2 f1 o7 s) E" k% S# O
<statement sequence1>;! Z- W$ O+ h4 H+ H6 j6 y" w
end;
% a, W2 A% }( l# y" t+ p1 E (3) repeat
$ ^, N. ]/ m7 Q% j$ }" R! p3 J <statement sequence1>;
9 Z( X$ w7 S2 M4 g( i8 {: f3 J6 }. s until <condition>;
/ G c8 n R, J5 u' K- E" ? (4) for <condition> to <condition> loop+ m$ ~5 o0 E( U% U* W
<statement sequence1>;5 Y6 a' y3 P8 W8 ?* {/ Z7 C
next;
2 c; t* g; |) M0 h: q& P3中断语句( P7 O0 V7 f! ?! `& \
waituntil <condition> prio <integer expression>;. O, s V* T! B( t* G4 R1 V5 R
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以上为常用的函数!
/ p5 W: t+ H, @/ d+ a6 R还有很多,如有需要我把资料发到你邮箱里 . ?# q4 |: s8 u2 t0 X p4 a
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