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发表于 2012-11-13 08:48:12
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1判断语句& y& C* G# X+ H; P' ~
if <condition> then
& @/ S7 m& t; f: E: y- P" J P <statement sequence1>;
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<statement sequence2>;
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<statement sequence3>;' H( y2 M$ a' Z/ O& M& z
end;
, H" ?0 H8 g: O8 h( u如果分支比较多,用:
4 V4 m6 x/ {! p3 S @. _ inspect <expression>
$ l9 z" x" X- j7 [( I when <constant_list> then
5 [7 T/ |2 {% p8 L <statement sequence1>;( F" X! C- o: A- K3 ], ~. l
when <constant_list> then
9 o0 G$ E6 j& U <statement sequence2>;+ R* j& Q7 P& r5 s1 u- J0 ^4 o/ y
...
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<statement sequence3>;
9 K- c5 z* h4 I* Tend;7 e- Y e1 N7 C
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2循环语句
. p- G, |( { T# v% K (1) from <statement sequence1>/ L$ F9 M: o2 m b6 A
until <condition> loop- X6 F1 q E: u- S% I( O7 z
<statement sequence2>;
5 R/ C! Y& Z9 `3 J9 y: M( B/ | end;
$ H1 r- m7 w5 ?. y- ? (2) while <condition> loop5 P8 R: v, g& R' D$ ]: L; N3 l3 l0 E0 x
<statement sequence1>;
" S( @: ~: m* \! y6 B' x9 F/ M end;
, j c% T1 e. D4 X- m: |( \ (3) repeat 9 {4 B* O( y2 U
<statement sequence1>;, R8 k+ @( z) C; q# d$ v
until <condition>;
Z0 G# n& g" b8 |& y (4) for <condition> to <condition> loop
) E9 V/ W( u4 |0 C <statement sequence1>;
0 h1 `! l% L: ]6 Z+ P: j next;0 d( D: o" T0 P% k! \' ~
3中断语句
( Q% ?6 h: H$ e4 ?, r' J. o' _6 K waituntil <condition> prio <integer expression>;( ?7 e, d$ `. r$ Q4 w0 K7 M
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以上为常用的函数!. S) n6 U' ^. x( Q8 ^' w% }8 {
还有很多,如有需要我把资料发到你邮箱里 . O% N( c6 \0 r. ]& U( j
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