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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# o* X) s, R9 B1 C! q* ?8 a$ @
if <condition> then
7 B7 P# k% H, F) h3 l <statement sequence1>;
* k- X9 o1 p# E- \: Y elseif <condition> then, g7 r% C! V& b+ {8 ~
<statement sequence2>;* m# X8 Q, H& c! n0 V) p
else
7 P$ ?3 d9 `8 k# r+ L& m <statement sequence3>;
, I+ W* f6 l& d% T# z end;: l; D! U/ J% ~
如果分支比较多,用:! j( U- O+ b R* F0 @ D# h% [
inspect <expression>
& q6 X3 V( f/ f4 F- x when <constant_list> then
" p H9 D' E5 R% ]! n5 b <statement sequence1>;. m2 ?/ H4 E9 B# _( x& j
when <constant_list> then
. U! U) [( R) ^8 o, q4 D: w <statement sequence2>;' x6 ~* b" o& B
...
) O# i. u K$ d: [ o$ u/ f2 E, a else
1 d; E7 v, Y! ^' t& V/ J6 J <statement sequence3>;
0 T9 p1 Q. G; T; i% b9 {0 dend;
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2循环语句
, T5 X$ F. k8 E (1) from <statement sequence1>
7 ^7 U) j+ W+ t$ m2 L' a until <condition> loop
% B# `% X) A. ?( M9 C/ D! V } <statement sequence2>;
+ G8 R. h* U; b, v j0 S( Z end;
+ J) ]6 \( g0 g2 q1 ~7 j3 ? (2) while <condition> loop
- s1 F* p8 x5 b& E <statement sequence1>;
" Y$ r4 j. @3 F; N( [' J, Q/ }, n5 B$ n7 n end;
4 F" R' a: B: d6 J5 m4 W) B# ~ (3) repeat
" ]1 ]7 w% p" S( e1 \ <statement sequence1>;) q( W7 g, ?$ }! g
until <condition>;5 F' E$ |5 u& `1 N
(4) for <condition> to <condition> loop! K, K | \* [
<statement sequence1>;& r, _: L( o* E* n5 b
next;7 S- Z0 _# y1 d% F/ `5 t6 o8 h
3中断语句- M+ x/ K- w* J& V0 F7 i0 J2 r" i8 b
waituntil <condition> prio <integer expression>;
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% X% p* y6 R7 \, S以上为常用的函数!6 P1 A* k; j6 r3 C2 o
还有很多,如有需要我把资料发到你邮箱里 2 L; ^, _4 g& a
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