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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
- ^8 G5 l4 M/ O% k if <condition> then, U. M \2 T% G
<statement sequence1>;
2 |7 n( m" \3 S. H7 O# o0 p elseif <condition> then1 e2 g) J* |/ n' L7 [ |
<statement sequence2>;
* \6 X! q7 V) |& e, I4 {2 v else
5 R4 T8 x4 }* \# E. J, v <statement sequence3>;
$ T( y6 e# z" e. ]4 Q end;0 G0 K R4 Q2 x' M- N e
如果分支比较多,用:
) T# f; F9 }0 m1 T! B0 [) I inspect <expression>
9 m+ [* B* o$ x* l8 {# \, y0 u: [ when <constant_list> then
/ f- J4 |% I4 ]5 | <statement sequence1>;
% I+ \( v: Q7 o/ F' M* Z when <constant_list> then
3 i3 Q; J& O, [ <statement sequence2>;
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else2 z5 o; {0 V( E* J
<statement sequence3>;
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: U [/ R! ?( p2 ?* U i2 S) j2循环语句
3 ~. s" M' {% m0 s& c8 l7 ? E8 h (1) from <statement sequence1> P$ r; T- X# m1 H+ E
until <condition> loop* m. O/ d+ E$ d& W) W: ^& S4 v: ^
<statement sequence2>;8 K9 @3 w$ d$ f
end;
2 S% l2 ^8 i8 ]7 z, }, J% T" y (2) while <condition> loop
8 Z& Q% V' s" l- n( @ <statement sequence1>;
7 S1 Z7 O" Z2 M+ E) U" o0 V end;
0 T& ~. d4 }' l5 C; E (3) repeat ' E, o5 J7 n2 Y( k/ h3 o- ~
<statement sequence1>;! q6 g7 C; A$ r/ i& @
until <condition>;: p( X0 H( s& b: D# Y J. a
(4) for <condition> to <condition> loop
$ Y: p! k8 X: k <statement sequence1>;0 |* S9 t, q' V- J \: ]! [
next;; o1 o! p% H5 b5 ]3 p* o
3中断语句
. c: r5 e* ?3 ?# V$ ]( L& k waituntil <condition> prio <integer expression>;0 H* ]( Y( }" G* @
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以上为常用的函数!
, i( p. K1 z4 R, [, _& {* y还有很多,如有需要我把资料发到你邮箱里
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