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发表于 2012-11-13 08:48:12
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1判断语句# a7 |- V* N. K& ^; [
if <condition> then
) m8 f0 K1 p% d" V8 \0 v <statement sequence1>;
/ ~& n: }0 C+ \+ x& B elseif <condition> then L$ B9 f( W, V' J
<statement sequence2>;% k- t/ G7 V3 `, N9 S0 s
else
# H0 C+ \/ C" {* c5 k( q0 l <statement sequence3>;% `- u2 [8 e4 d; \
end;! d+ a* o0 `4 _' u7 _
如果分支比较多，用：
2 b9 a" v: z5 Z" Z q inspect <expression>: G k+ u# V6 n1 `3 i) D
when <constant_list> then( y0 K9 {! o1 H# H x# G
<statement sequence1>;8 m- X% }+ \: W4 d$ T H
when <constant_list> then
+ {# ?; r& c3 N1 J7 S/ w <statement sequence2>;
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else
1 }. `8 e* D9 t2 J5 |5 [9 Z3 _ <statement sequence3>;$ P& i# ~8 ~: J1 E8 R1 E7 v! P9 y
end;
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2循环语句5 _6 T- g: H: N4 N9 u
(1) from <statement sequence1>' \4 s- B4 K* p; m$ \/ ^: o8 d; M
until <condition> loop
0 \% n9 E* g" {1 }- p" g* e <statement sequence2>;
! U0 x2 S3 ]. |7 ^8 M+ u k- M end;7 B* ~. F, v/ ~! F4 S
(2) while <condition> loop% k; @3 R& j! f* n# |4 }
<statement sequence1>;
- n! V7 P5 g) q) W$ C end;0 n; h6 i Y7 R
(3) repeat
% V: K: [3 e9 D5 W& i) I <statement sequence1>;/ A9 F @6 w& Q" O/ ?. S+ p: o5 z" z
until <condition>;
% j$ g5 I) \9 x (4) for <condition> to <condition> loop% ]. L; _5 v4 R9 r% S/ q
<statement sequence1>;
4 v A8 H$ H; V1 F next;
# S! g8 i* o J3中断语句4 ^8 D! X; L" v2 i; D/ }! r
waituntil <condition> prio <integer expression>;! U$ X0 z1 j, i2 \
1 |7 ^, h9 l1 i& a; ^+ n& o" w
/ {# |! h+ A, F以上为常用的函数！8 L X2 C9 p; S- s1 G
还有很多，如有需要我把资料发到你邮箱里 - T4 q% b9 _0 I8 x# }8 ]
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