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发表于 2012-11-13 08:48:12
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1判断语句6 _0 f& ]% `1 t' H
if <condition> then$ V# B9 e8 Y: |6 [1 i4 w! u0 @
<statement sequence1>;
/ e! _: I, N4 v y% n: I- X elseif <condition> then
: n$ l4 w7 j5 f- ^+ r1 b7 i" i% i <statement sequence2>;( q( e7 ]. c' m: u) _; m
else
, }" p# Z$ ^8 U0 l9 I0 V <statement sequence3>;* R6 b! o3 J/ [ w. _
end;
{% F' `3 h" V9 \9 {/ Q$ ^如果分支比较多，用：
) |- x: F! h/ {- m( Z+ G- n1 H inspect <expression>$ k3 |( I0 X1 g: d4 y$ x- p
when <constant_list> then* x9 [# k/ R& A$ c4 p/ c, B
<statement sequence1>;
* i6 Z7 W$ @6 x* b. e. U& t when <constant_list> then |. b. l5 G8 |9 [# T
<statement sequence2>;
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else1 f) G) e! r9 Z$ B( K
<statement sequence3>;2 `, h' r' C8 V `6 m6 L
end;( z+ x: S; A/ c# P
# v) M( H: p+ A4 ^8 \2循环语句4 q) S/ E+ ?+ _* p& P
(1) from <statement sequence1>9 Y" D( B R7 x' A! U
until <condition> loop
3 L5 B6 n: R3 S5 | <statement sequence2>;0 Y$ u2 Q N" t N) T. H3 u
end;: O. X/ e9 W t- l( s+ X+ O9 q% _
(2) while <condition> loop, Z2 T2 y- Y% m
<statement sequence1>;
' Y) C9 \& H0 a; e; ~ K" z" k end;
) l( z9 }4 ?' k' y (3) repeat
* C3 N( s5 U8 m. a5 M <statement sequence1>;$ ?2 z* K- k1 X7 @4 D1 s
until <condition>;
) V9 X- m* w4 Z7 m E. ^* V (4) for <condition> to <condition> loop
1 k) G# {; g% C <statement sequence1>;
: g; n0 `+ d0 _6 a9 d0 y next;
+ Y+ Z4 A$ g0 C; g+ h9 J3中断语句% S/ Z& ~0 C8 J+ T) l
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
$ I! w9 z& y, E& Q! k( u还有很多，如有需要我把资料发到你邮箱里 , s7 j2 `. t, q/ z( L) v: E
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