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发表于 2012-11-13 08:48:12
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1判断语句
/ w, P! `" t \ if <condition> then
* J! x! U L2 Y! q/ i <statement sequence1>;9 f, k/ B/ L( K& }: x7 ]
elseif <condition> then+ y0 n- V* C+ H. {
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
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when <constant_list> then
% a4 a/ _# d( x% U4 N7 J; M <statement sequence1>;
2 ?5 a& ?4 s6 d0 I1 h; ^7 r when <constant_list> then
, ?, o1 l0 ?5 u% w0 W <statement sequence2>;( ]: U( f% U4 [: z& e" Z
...5 h L9 v: ^! `
else
5 x+ S1 N2 C6 i <statement sequence3>;' K2 _: y6 q4 X, Z4 ?
end;, G n* _' `% J& u3 q' J$ x
! |, }/ ]1 S' @: _5 e ?2循环语句
( o3 U, Y* z3 \ (1) from <statement sequence1>4 d# _4 _$ J$ D" O! _3 q. t+ R
until <condition> loop
4 Y' j- g. |' I8 J: |; y <statement sequence2>;
' C7 @3 m9 M9 ]$ s7 Y end;
9 ] O l/ f, Y+ a* y: j% `9 R (2) while <condition> loop; a: Z- E! R7 e# `0 Q7 n6 @
<statement sequence1>;
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(3) repeat ) o1 ]/ ]8 j- E! z2 G7 m( i# W& X* l9 f
<statement sequence1>;8 K r; W" m* M0 S. c3 v2 J6 v+ P! C
until <condition>;
- l- d0 X6 h, }9 L3 k4 ? (4) for <condition> to <condition> loop
( v9 G& K, X8 w& N& @ <statement sequence1>;
# x0 {0 ?$ r/ Y: M! u5 n9 j4 Q4 C' F) I next;- c% f- w. @, d1 o' N# Q) m
3中断语句
. \3 J m; ?* q* ~2 i: Z waituntil <condition> prio <integer expression>;
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以上为常用的函数！
% X) r5 }& C% n8 X- n W% c3 O" W% C1 e还有很多，如有需要我把资料发到你邮箱里
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