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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
- e+ X; f$ `- h- x if <condition> then
\9 P' \, s, b" R: L0 f) E <statement sequence1>;
( S }8 _/ e: i0 R0 M4 S- Q elseif <condition> then
! l: W+ p/ P8 a% u. F/ a1 K3 d <statement sequence2>;7 a$ _) M! s; ~1 v
else 0 Q8 D& W2 ?2 e7 R
<statement sequence3>;
0 X& L% e( B1 Q end;$ p! j$ e/ K$ d$ f" g* X
如果分支比较多，用：
& o7 X' ^6 ? w6 B' o q6 C" E inspect <expression>
( Y3 J3 |6 k4 F" Y" _$ r when <constant_list> then
) V8 H+ O7 X p <statement sequence1>;) l( i1 f- ]2 v& \
when <constant_list> then& @) r" F3 L0 M7 [5 G4 K/ _
<statement sequence2>;7 x! }3 y* X$ k, D/ @
...
! p# L$ F; O7 {9 z2 J/ r else
* s' d% J" F2 ^2 P+ K <statement sequence3>;. O- O) i! Z9 R
end;
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) m1 N; A- [. a* A/ r6 X3 S2循环语句
: [5 W3 t: C; x; A$ m( @2 u (1) from <statement sequence1>
3 ]% w' ^: ?# S& T; ?) L' h( r ~ until <condition> loop
0 L( H% z1 F+ ^2 C0 } <statement sequence2>;
, d& a: O9 W- g' c end;
/ U' F; W$ m- H- M+ W) f/ R (2) while <condition> loop
$ W! j; q7 @- O$ p0 D <statement sequence1>;
, B# O0 T9 w9 S) o end;
" u7 Z9 ]5 y. n$ M% M3 V! d (3) repeat
3 a4 R ]8 \: V* U5 X <statement sequence1>;
* Z" j; G7 o- L( z% U until <condition>;
# \$ {2 g( }- h1 H (4) for <condition> to <condition> loop, \1 G8 k" ~" B+ x; X
<statement sequence1>; p* Q# A2 h( X3 z* u/ `( _9 l9 o
next;9 d- R5 w v: c x4 {# o" d
3中断语句
+ ?8 B. M; a6 I, e7 v waituntil <condition> prio <integer expression>;
3 D4 ^; B3 x0 y% G6 p0 o4 u4 o5 B6 \' o, ]% |' Y ]" `
% m$ M* Z) S. f" |% E2 B* K
以上为常用的函数！
, l) H9 I0 d8 b. S还有很多，如有需要我把资料发到你邮箱里 : ~5 v1 w. V. m( i8 T! h8 S! B9 p
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