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发表于 2012-11-13 08:48:12
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1判断语句/ L) c8 s# ~* J. E
if <condition> then' t* L$ W: t; @+ F1 e$ g
<statement sequence1>;8 r: D& ^) E* `2 i1 c
elseif <condition> then- V3 P1 K! x! O, G# i
<statement sequence2>;
! e# g' c" G- j$ Y2 G; E# R. o# l else * s- W: J5 S( R" z! r7 j
<statement sequence3>;
9 [& T) q, k3 u3 l) q0 h end;5 B: K C8 A# G7 _' |+ F" t
如果分支比较多，用：" C9 V8 y0 o/ M& o
inspect <expression>9 c9 _) x. T1 {3 Q) M; T+ d
when <constant_list> then
' d" |7 c- `4 k0 N- k <statement sequence1>;% i/ e6 J! B* d% p6 W3 T
when <constant_list> then
2 z$ T6 ]" N+ Q <statement sequence2>;
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else5 y4 h5 {5 L5 I# k5 o2 ~+ v
<statement sequence3>;: C% R% t8 Q7 X( u. F; E
end; C# m/ N6 o8 D: ^: u. l
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2循环语句
m9 v" f+ S7 x8 N (1) from <statement sequence1>6 U: U8 M9 V. | j5 [1 w1 w6 U& ^8 W
until <condition> loop- u) ]$ F+ t4 w9 k
<statement sequence2>;
% `6 g. a) J' B. d% b end;
% \8 x. V9 J5 h* b (2) while <condition> loop
1 z! o) Z8 W' K. _, }6 n- {; E <statement sequence1>;8 Q4 p: X, S, H: c7 t, U4 ~
end;
. A6 S' ]' s3 u; J; I4 v2 Z2 ? (3) repeat
, M0 x+ g2 M p8 O' x4 ~% b <statement sequence1>;
. S7 f7 G% @# y0 D until <condition>;. ~$ i7 C, x2 J; h2 t
(4) for <condition> to <condition> loop
; W9 ?/ `# _! F( \+ r <statement sequence1>;
& m0 {# L& {5 K next;( n, w; p' h" Q4 F2 S- E z
3中断语句
" B2 [( r, S6 N. o; B waituntil <condition> prio <integer expression>;
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以上为常用的函数！
/ ~0 j) f4 J1 m3 d还有很多，如有需要我把资料发到你邮箱里 % Z6 \. m- l9 [& T' ^* f/ |
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