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发表于 2012-11-13 08:48:12
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1判断语句- _% F. D# N' F/ ?& m5 |
if <condition> then
& p4 f$ }; F) t( J5 | <statement sequence1>;
( Z5 z0 B1 D; S1 N, I elseif <condition> then6 j8 [9 X1 Z8 s' D- H# _, K6 a4 y, k
<statement sequence2>;
V+ z+ `, ?! ?. v else
3 W$ \; h8 Z7 ^5 D <statement sequence3>;5 `: `( g; Q& o1 ?9 `
end;" W& ?" u+ [5 d6 }' ~' ?0 y
如果分支比较多，用：
* r+ [/ {1 P3 A inspect <expression>+ w; p: X- h* V9 _# A
when <constant_list> then
, t. k- I& S9 b Z: V5 X: A- P+ n <statement sequence1>;
/ A2 ~! h' o! M when <constant_list> then
5 }9 M7 f9 Q9 a: ]+ v <statement sequence2>;- g+ q5 q; |" [+ G) d5 F' _% E2 u
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else
! @! ]; Z+ G' y; W8 ^3 c7 p <statement sequence3>;6 j" v J+ o, x! v0 O, T
end;
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2循环语句
% _' M* ]0 S8 w" W, A% l, p (1) from <statement sequence1>1 {2 c2 @/ I5 ]. @) _
until <condition> loop
`# j$ A( o! {" F, M <statement sequence2>;
) B" ]$ p) u: g& Q end;+ v3 p9 m( V* U5 e! B, L
(2) while <condition> loop
5 w/ H1 p" T' c3 s* @/ o <statement sequence1>; j# g3 T. ]9 @5 g# ]$ h- U
end;
, V! ~; n4 E1 m# {: K% c$ x (3) repeat 0 f4 O: {- U. U. C' ]+ R* Q
<statement sequence1>;
' ]2 X- Z, q1 T6 P- q3 t2 K( l until <condition>;
L6 k9 g$ e# _- i0 l (4) for <condition> to <condition> loop
" E& Q4 J; J7 T <statement sequence1>;
# o7 @$ c. t+ u9 t, f next;
6 ^& X$ e% h- u! k- U3中断语句
O* l; t T+ n1 G# X waituntil <condition> prio <integer expression>;
+ P4 r0 E0 Y$ }& w# q: m9 Q; @ ? E
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以上为常用的函数！/ y6 Q- W: p, g. v( d2 n
还有很多，如有需要我把资料发到你邮箱里
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