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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* j; z: x3 x# V: n6 b5 w/ B
if <condition> then; y5 b3 G# J C; H8 F
<statement sequence1>;2 F q+ f$ Q: m4 J& w O/ Q z* N& ]0 s
elseif <condition> then4 Q3 T$ s- }' ^
<statement sequence2>;
" Y7 t2 I, _0 j0 S% u else
% E: Y' x. x) J' r, w5 i) I <statement sequence3>;
$ l: V- G, u( ~9 V7 E end;( d6 ~- U* H& ?
如果分支比较多,用:
( w, V# H* s& a7 D9 I inspect <expression>+ Y- J$ h( j# R: f% q8 n4 ]
when <constant_list> then
, P8 { m3 R) K2 J* `9 s <statement sequence1>;
5 x3 b, n4 y1 p2 _, S' Q) e: g when <constant_list> then" d. x) l2 `0 J" J
<statement sequence2>;
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else* x$ E3 g% F0 s- Z O( _& t8 j
<statement sequence3>;- a* {2 v2 Q. U$ r6 u+ C
end;
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2循环语句
( P0 y& G; N' f. d% a (1) from <statement sequence1>
$ u9 q2 T2 O. g& z. G9 W, V/ N until <condition> loop
+ t& i. u- z6 Z7 ?+ \ <statement sequence2>; Q9 q; c2 m% Y. F2 ?! d5 c8 x5 q
end;
" c! ^: X$ |8 C2 ]4 u+ F (2) while <condition> loop# R! T; q5 s4 k: k' j' `
<statement sequence1>;+ d" U, S; r+ q0 P" `5 k# U$ T
end;3 h5 s& Q4 n! G. u2 U# Q
(3) repeat 2 B/ U& i- E4 O% v
<statement sequence1>;
) y2 I2 Y6 ~* J% A; l# ^" C until <condition>;0 D; U0 `( S1 t
(4) for <condition> to <condition> loop- L q o$ F" a( e6 r
<statement sequence1>;, q5 v1 Z' [2 a7 d7 q. y5 q' a
next;# p* c/ N( T8 ?: f
3中断语句$ H/ Y( C0 L9 @
waituntil <condition> prio <integer expression>;3 K+ {, `+ t) C E
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以上为常用的函数!0 M) G/ U/ i- y( X2 z, ^
还有很多,如有需要我把资料发到你邮箱里
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