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发表于 2012-11-13 08:48:12
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1判断语句3 O0 F# j' G9 k$ s5 |, {# @
if <condition> then0 W1 k6 M6 Y" D. u$ X" V* t
<statement sequence1>;
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<statement sequence2>;! _& X, s3 `8 \1 j; Q$ i/ D! o' S
else / o4 o% G! {$ I1 P
<statement sequence3>;- W' G9 J; b8 S- U
end;
9 k# ~. i& B9 Y' J/ ]如果分支比较多,用:
7 G8 w" y- @1 l% {- W inspect <expression>% [6 V c/ O. o _+ {
when <constant_list> then
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when <constant_list> then
# Y4 f* @# @* T( k <statement sequence2>;0 |# ~1 J0 ~7 C" e0 }6 j3 R
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else: B. e5 P1 G: w# r! Y- @. j' v
<statement sequence3>;" h9 I" r' W6 H( e+ V# T
end;
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2循环语句
- O3 H# ?& h. Z3 o (1) from <statement sequence1>) {3 W6 X! W6 e, J& E
until <condition> loop
# X9 p" w9 U7 S5 J# c" T4 I <statement sequence2>;7 C2 _1 |; D- e/ {+ ]; @% |3 K# A. E
end;, b! t' a7 p( S- z% i. m# W( _
(2) while <condition> loop
( O* F/ _; k, Y <statement sequence1>;6 U; T8 Q' ~# |+ R$ K
end;+ D1 q3 Z3 M; j9 w+ A j u# S( x, [
(3) repeat
' b" I- P" @7 q v; Y5 I& G <statement sequence1>;
( V1 z4 L- ]4 a5 u' w' o J until <condition>;
$ d4 ~* Z, m0 b- d" c& ` K (4) for <condition> to <condition> loop
- o4 o. Z" {$ @$ G- V" K <statement sequence1>;
" z3 B ]" k0 D# u$ u: K6 I. @* h next;, l* O: w# B! t0 K
3中断语句# g, C5 W Q0 R! u, a6 J1 n t, h- S
waituntil <condition> prio <integer expression>;2 I/ r" c, s) I9 H( I
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以上为常用的函数!- x3 f$ h6 O. e4 d) h a' o
还有很多,如有需要我把资料发到你邮箱里 6 W& i- |1 S% ?
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