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发表于 2012-11-13 08:48:12
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1判断语句$ y+ p k- B* A$ b7 j0 k; L8 p1 D- c, `
if <condition> then. ?! }9 P; ~7 ]; x2 q
<statement sequence1>;
4 |6 i6 Q' e o+ p* C3 ^0 K elseif <condition> then" r, |6 w/ j/ e8 j8 _' L5 Y" D
<statement sequence2>;, M, J& L* z( {, z
else $ H3 U+ m) [9 a$ N" W
<statement sequence3>;( j# F" c* r* a8 E( _4 J3 k
end;% Z8 b% u& ]# f/ j- E3 s
如果分支比较多，用：
3 \- t/ l: M. w; @# }( `# d9 k inspect <expression>; R* u( v- c" B' b
when <constant_list> then+ t7 X; L3 V) g- t. i
<statement sequence1>;
# J5 t2 n% ~# l when <constant_list> then: O& A: z& b0 T4 i
<statement sequence2>;/ U' L; _/ m j
...
& @: q, [: y7 R else. Y3 r# O1 w- N- w
<statement sequence3>;
* ~3 N5 G; }9 x- n0 u, ]( Jend;! X5 y6 I+ f( |" f- j# D, D
k! Q+ U$ e5 ]+ O# P% Y$ k
2循环语句3 S9 b7 N) H' q% r6 D7 N- a" R
(1) from <statement sequence1>% k. s* M, @# F$ U9 a+ Y7 E: P
until <condition> loop
) q; `! t9 @2 A* X* X2 H <statement sequence2>;% p' M% [; {7 a9 N4 b. X
end;
8 Q# y2 }3 C" x (2) while <condition> loop. D5 ]9 p+ T5 Y! D' y7 ^ k# P
<statement sequence1>;1 l" l/ ?3 \+ p- X1 I% B
end;
8 `1 V4 r% d( J* d1 v, ^ (3) repeat 8 F, u5 D1 |6 \$ X* |, Z
<statement sequence1>;" w" u5 J. e# n; t/ Z1 E3 q* R
until <condition>;" S6 r8 Q0 h+ I/ [1 u
(4) for <condition> to <condition> loop
+ B. ~" p- n- }2 ]/ D( L <statement sequence1>;1 A- T- X# G# t8 y6 d
next;- M: S- K' @2 e" y+ }6 O5 B
3中断语句
8 l A# F2 V+ i+ K% A- @ waituntil <condition> prio <integer expression>;4 H% n2 ~# j3 C3 f
% e" G3 C7 l- P& W& ]- N7 m7 I# I$ J
以上为常用的函数！
" k7 ~& u& Z" _2 N4 y还有很多，如有需要我把资料发到你邮箱里 4 V3 _6 X; G$ g1 O5 {
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