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发表于 2012-11-13 08:48:12
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1判断语句
. H1 g1 E. |7 D if <condition> then
8 F, w; B* y0 C0 X <statement sequence1>;; f1 v! j: r5 b) I
elseif <condition> then( B. k, z. {& b, W# z/ k( X
<statement sequence2>;& l" i/ o$ [2 ~4 w
else
$ K( ]# y# y( I3 l# F2 q <statement sequence3>;# g2 x5 `) X# H
end;
- [1 ?1 w$ K# E" T) s# m如果分支比较多，用：
# H; N% J5 y, I# k5 R' i inspect <expression>
" m a0 @) u v/ E when <constant_list> then
4 T4 h# ]$ q; @6 ^ G M* ~$ O5 h <statement sequence1>;6 L2 u: W: |5 E4 Y" y( G' A5 Z: b
when <constant_list> then
4 K2 t& U. g/ p <statement sequence2>;0 y' d& h6 c: {
...4 D2 A$ g% Y9 z
else
: H6 m5 e2 y* `. \ <statement sequence3>;8 i- g. R% R! h- D# b
end;
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2循环语句1 r: t5 B% W' L' q! V6 [/ R: y7 M' ]
(1) from <statement sequence1>
% y+ X2 o& f0 ? until <condition> loop( m1 K" E( H S) v2 G3 y
<statement sequence2>;
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(2) while <condition> loop; o. f$ J. x0 w" Q" q3 g
<statement sequence1>;
: S! F# } I. ^: H. D( o end;5 v) l5 C' S" ?5 F z: U7 o( V
(3) repeat
8 @2 m9 L$ K& N0 x. } r) \1 B <statement sequence1>;* n, W: E( K' d l1 }, k
until <condition>;
4 y; K: c3 Q! w% T: X (4) for <condition> to <condition> loop
% W) O6 ^6 W. v- ]9 G+ k <statement sequence1>;
7 U. u* V+ U9 g- ]* T0 a) F next;1 K: G7 {) y' [" |5 ?" q
3中断语句5 \" i" {2 x9 C; J! J
waituntil <condition> prio <integer expression>;' l* `$ \" n. t* H; o1 a2 e! \* c
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9 S, G, G/ v: l W' f* c以上为常用的函数！
, j/ Z9 o4 w0 d还有很多，如有需要我把资料发到你邮箱里
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