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发表于 2012-11-13 08:48:12
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1判断语句
1 M! R. |9 G2 P# G# M4 x8 k ] if <condition> then
3 q. T7 D7 r& c5 |# ^( x7 M6 F <statement sequence1>;/ b5 P. {2 q1 o+ Z5 E% c
elseif <condition> then
2 r, c0 i$ [# t6 ~. G I( O) o <statement sequence2>;! J" E. {; A8 H8 F+ D. J0 ~
else
8 k) L) f. m8 @/ D7 S! ` <statement sequence3>;
# O# t b+ f7 ~ end;
% V6 E8 Y$ Y* @0 ?如果分支比较多,用:
1 Y0 m) G5 Z: Q5 S inspect <expression>( a9 T& x+ I4 h: }
when <constant_list> then
+ |# ^2 H; ^' k7 h3 \8 T <statement sequence1>;
" h6 c8 C d9 X5 j# ^# G when <constant_list> then
6 z2 k. ?+ F2 X <statement sequence2>;# E( M: ~! D4 E7 u5 t0 M4 `
...
# n( @" b/ |2 i! @: `. v else N0 X! v c* f; p9 F
<statement sequence3>;
t5 \9 t6 i* ?& e7 m" bend;' {) i) Y* x( c
5 B# Z+ B" N) s$ W' q2循环语句
* D4 K1 |8 A3 ` x (1) from <statement sequence1>& z1 ?7 p& o9 L, T' `: g0 p
until <condition> loop. U' O8 C9 ]/ f% K
<statement sequence2>;, R' O3 \; r" u; t9 k1 D ] u
end;: b% J0 m, T/ W: ?' j
(2) while <condition> loop
! _3 G, h$ B$ x: Z5 b3 z" G; T <statement sequence1>;; i Z9 z9 R$ k3 h: b# b. T
end;+ k$ w% J2 h5 A& g7 z2 Z
(3) repeat
4 S# T: n# V; O& l <statement sequence1>;( r! \/ t l5 h) Z" r9 W2 r
until <condition>;
7 ?6 c# n R; S* K5 A" Q (4) for <condition> to <condition> loop
/ |( E0 l. Y; r% G3 t+ |6 F <statement sequence1>;2 x* @# y+ G" v" Y
next;& O0 h0 L, j* [
3中断语句
5 g, ], \! P8 j* ]0 Y* y* _ waituntil <condition> prio <integer expression>;
3 i0 |* _' L g u Z. Z
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以上为常用的函数!1 \2 v$ g0 U/ \" \5 d
还有很多,如有需要我把资料发到你邮箱里 : f+ x% U Z" @# P( `* d$ }5 M
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