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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
5 d7 L4 ~4 g! e* B( @- { if <condition> then
! s" }4 X0 E# I$ H% e) k3 E1 w <statement sequence1>;
- J I+ y) j* S- R& A6 g$ o elseif <condition> then
2 e, V( y6 N8 M9 J% j) Z <statement sequence2>;1 {! o: w' {2 ~: ` v* L. N% l
else 6 f; w& F) |: y9 y' o) S0 v
<statement sequence3>;9 }9 F, e7 g" p: V4 `
end;' m" o3 S6 z7 o6 z! W
如果分支比较多,用:
$ d7 ^) Q- D% R0 R* L$ d1 T inspect <expression>
, o8 i, k3 y, V& R' J7 H0 X: z when <constant_list> then( }3 O/ I1 u% R
<statement sequence1>;
! @2 c. P$ Z5 |' Y1 } when <constant_list> then
@( o, L6 O" k M0 D5 U: l( t/ ] <statement sequence2>;1 E1 {/ D0 h; X/ P: f N
.../ `8 ]& ?- ^: |
else
9 M7 x& M( O8 {" Z' r5 f <statement sequence3>;2 d# _8 w' a) W! O1 [) Z6 S( Y
end;$ w& R' x1 q" X/ ]
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2循环语句+ B: e( m3 `5 T+ ?; K3 x
(1) from <statement sequence1>
3 y; ~7 F; x7 g1 m until <condition> loop
7 j1 |9 M1 ~$ F }" _; f <statement sequence2>;2 _! C& [+ U3 ~" U& e& ]
end;$ [1 h; L( m( X6 h9 n
(2) while <condition> loop' f4 S4 o% f9 ?0 l; w9 `( y) K
<statement sequence1>;
0 `: V; O3 i9 F7 P6 w end;
4 K4 c, d: b+ _5 T! _+ f7 ^3 n (3) repeat ' A1 L6 a7 ^3 \- P
<statement sequence1>;
- v! |; {) u% ?. f# Z until <condition>;, I3 R4 d% t( o0 W
(4) for <condition> to <condition> loop
?7 o( Y' E& P <statement sequence1>;; }9 `4 w: g8 m7 s# O7 U$ K Q
next;9 T7 _$ T7 ]8 F/ ~5 \
3中断语句; }. C6 n: D. K4 x" M# y7 c6 a
waituntil <condition> prio <integer expression>;
* H" J! d* l9 Q5 z! S$ D5 ?
% x3 t5 L6 }5 \1 t" S
, Z7 T' l- e- O4 g) \以上为常用的函数!- D0 w C8 |# B/ t4 R
还有很多,如有需要我把资料发到你邮箱里
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