|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句' E6 s9 w( u3 e3 W1 B
if <condition> then$ s, A$ N# Q7 c- q" s
<statement sequence1>;
5 S* Q5 s; S" j, e' a4 k- y5 D elseif <condition> then
, m, C X2 ?1 n <statement sequence2>;2 m- Z* |: N k- ~2 a' [
else
5 [3 i7 C) ~! l4 K' V; k2 V <statement sequence3>;
0 K. t8 C0 X- O end; Y4 |- ~4 J6 }" z* a6 m
如果分支比较多,用:% U: m5 K0 I# o% H8 J
inspect <expression> F- U2 n: y: U$ T7 @4 B) R4 C9 |# R
when <constant_list> then
' A4 J) _( w6 ]# S4 E. N, K- V <statement sequence1>;
6 `7 w0 j5 A: w$ [, S& V when <constant_list> then7 `3 x l7 r' M4 }
<statement sequence2>;0 r- y" ?6 k& w: v
...
( Q& q+ j A+ [, o! y$ S$ p else
* B" l5 e! Q) T <statement sequence3>;
: n h( p$ H: X/ B: f T" rend;9 W8 `0 e9 }4 X1 {3 ~& I% }( s
. |' f' l+ C/ t8 t( h8 H( a( r
2循环语句
6 L5 v3 O% R$ q (1) from <statement sequence1>2 d1 d* B$ S1 z+ C+ @
until <condition> loop
8 M; N1 \/ h7 K! w) H T <statement sequence2>;
3 _* n. R. a/ Q/ |! M" F# T end;4 j" R. d" x& V
(2) while <condition> loop0 @, {+ E% k; Z: J
<statement sequence1>;3 G0 f& [+ {' t, z/ F
end;
3 u. T9 @% X3 X& B0 L* _2 n4 }' B; R (3) repeat
/ X0 n- V2 F0 q3 k) P <statement sequence1>;1 A3 o$ }" i0 |1 h
until <condition>;$ }7 d( E( u1 C- e; I' t) U
(4) for <condition> to <condition> loop7 m" a: J4 {& A3 P/ }, K
<statement sequence1>;2 ^* [% j( [- p
next;
$ N* N% A. f, K0 F3中断语句
7 X P: O3 A$ R5 k. l3 l M waituntil <condition> prio <integer expression>;/ S* R: ^# y$ u! n
( w5 m( p/ Q- V7 ^$ v+ j% K0 x) p& D. x' m. l
以上为常用的函数!
+ f- @1 ]' H1 d还有很多,如有需要我把资料发到你邮箱里
" s& H) \- _& f4 }
& R4 _0 q! M" V _$ _" c; |' Z; L0 B6 I% G
; d* c' j$ ? K% }- r
1 _5 Z8 I1 s9 M% K# {3 W
9 s; P* @& |, Q8 w+ w* U4 a0 q" W
4 l. }+ o8 p& D8 R6 t& |$ k9 b5 y$ ]" ]" E$ U/ d4 s1 w/ h; ~
% @% G# F2 m7 j* l& w) M' J1 u* r" ~( v2 I# g3 y& g
$ m, K" v7 Z+ j0 ?" S* M |
|