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发表于 2012-11-13 08:48:12
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1判断语句- @- I; H) R8 ?9 ]
if <condition> then% X1 A( j9 R, [7 U5 U( X
<statement sequence1>;& i2 b& f; H5 t2 U" w3 }9 ^3 ^
elseif <condition> then
6 h' ]6 v: T4 c- X$ i <statement sequence2>;; X4 j$ O& d. u2 d
else
% N4 ~# P5 j- s+ } <statement sequence3>;1 w$ U2 T8 z: {. @; o2 h! b
end;( q2 ?7 H7 r& {( `
如果分支比较多,用:
% n7 [+ L0 @# i$ F, i8 \ inspect <expression>
3 C, i3 J! g5 x+ w8 t: w. I% g+ } when <constant_list> then0 t% n, o$ _6 e+ `) T
<statement sequence1>;, u e" ~( h7 b- I8 }8 d: c: u
when <constant_list> then) z3 u4 a4 _* R" h
<statement sequence2>;. D/ i2 e/ q, S$ {4 N/ X
...
* q x: K. P1 ]5 T9 k- D else
7 N' f& d% w' i. u5 O( g <statement sequence3>;
# [& Y+ b! v' w& F" Rend;
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2循环语句
% V; F. H; t6 |( X- j (1) from <statement sequence1>8 n5 p @ q- j" Y( u% A3 y3 S
until <condition> loop
2 B! Y1 O8 S# X <statement sequence2>;9 f* `8 U; Q9 [9 I k- j8 n
end;" P+ c: V0 d* B7 n) l" ~
(2) while <condition> loop8 f$ b8 b7 W4 a9 i5 V$ T, v
<statement sequence1>;) @( N/ K4 q1 X8 _
end;
) d7 m; V ]' y, S (3) repeat # U, _5 K- m' y- Z6 d' c7 w& h
<statement sequence1>;1 O4 [% P: X( Z: P6 ~& V
until <condition>;
7 b8 O% g) [7 T: y# N4 Y (4) for <condition> to <condition> loop; f6 `) p% c$ o5 `9 T
<statement sequence1>;
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3中断语句
Q) T7 Z/ P# y! }+ j waituntil <condition> prio <integer expression>;
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( P+ n% \6 C' u }% s以上为常用的函数!) Q2 {* K5 r! P8 q$ {6 \
还有很多,如有需要我把资料发到你邮箱里 " U( p' i; X8 k, S7 u/ Z" U! V
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