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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 L/ C; M- H* n W; @! M if <condition> then
6 p8 y8 g: x; k& @7 M <statement sequence1>;
( H4 }+ }% s( i9 o elseif <condition> then
" l! S- U i8 r y( S/ T <statement sequence2>;
3 m' _1 |9 y& s% v r( a else
( W9 o1 E. F" p9 ~5 q6 D <statement sequence3>;# u. B2 U% }# `% t2 f9 i6 |7 ]* ]
end;
: }9 \& I G" N: Q; J8 t! h6 Q如果分支比较多，用：
2 c; \, a8 g1 |; R- e: O% i" \ inspect <expression>: x2 I3 d& I, S
when <constant_list> then
# v. _; m, ]& w- V <statement sequence1>;$ {0 |3 A; G- @9 a
when <constant_list> then
! S5 R8 H- p6 [; J1 `3 p/ i6 M( | <statement sequence2>;, W' ~4 T# }) s3 P( `( a
...
( \7 _- A p3 g$ N else
* y4 K7 k, W3 _0 `* r+ N <statement sequence3>;
0 s9 H. L7 V( @/ {# L8 ~end;1 d- W% v5 g" Z( o' _9 V' q" e
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2循环语句
: e. M: }- |* |1 A/ Z( p (1) from <statement sequence1>
* w8 G" M" N v0 ] until <condition> loop; N! [; R6 V+ i8 V
<statement sequence2>;/ a' c% d- z: d5 p0 l
end;
: B8 N$ x, e3 g# r/ S' f (2) while <condition> loop
% y- k- i0 q( N7 h. {* b <statement sequence1>;- r% t6 Q' H- G6 h. N0 Q
end;) }+ ?) ^$ P) N j* t; g* t4 A' P1 }
(3) repeat 1 X: Q/ n+ e5 ]% U8 p% M& B
<statement sequence1>;
. _, k/ }" U7 l3 u5 z$ B% b until <condition>;3 Y! K+ @2 X& A4 M. {! `
(4) for <condition> to <condition> loop
* _: l& |/ p5 b6 U6 p <statement sequence1>;
. h2 t4 A- ~8 V next;
z; @, g4 j; f3中断语句
( V/ E& M1 {+ R. _) w5 L waituntil <condition> prio <integer expression>;- `' ]& h1 t& t3 O y7 F
, P! M, W! [! Y0 |% N- B2 f4 z7 m/ U7 x$ |# b2 d' Z, J- h
以上为常用的函数！
1 a6 A7 J1 n' p* W, {) O还有很多，如有需要我把资料发到你邮箱里 1 u( ?8 o3 x1 ~/ \2 }8 H
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