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发表于 2012-11-13 08:48:12
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1判断语句% z2 `9 u! X1 `/ c5 z7 s
if <condition> then. N# B9 j H; P5 ^ D
<statement sequence1>;
( U& e9 [& t- @5 r8 @ elseif <condition> then
# l$ \ e6 G4 d1 e- Q. z& x <statement sequence2>;
4 k u. O$ J `' j3 W else
a% X& k! x- \& { <statement sequence3>;
% B4 {1 \( z' k2 m, i% x9 z7 Q+ j end;
9 A/ V. ?" ~# K, g如果分支比较多，用：
) \. t& `! f; I# j6 o inspect <expression>
9 |( b. t, o/ k4 a" Y: \ when <constant_list> then1 R1 E$ L; }8 G; Y* e
<statement sequence1>;. o" O2 X8 x [: ^( g' P( F7 f
when <constant_list> then: f2 [& q1 y/ E% ?" p
<statement sequence2>;
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else
- B# R; t) Y- Y& m <statement sequence3>;$ f) a1 Q# ?5 x9 s2 r
end;
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$ ]$ j# \1 w7 G2循环语句
- i# ]. a- R% ?/ Y3 l, F (1) from <statement sequence1>
) u3 r2 {6 `7 A/ J- L until <condition> loop8 E; d1 Z; D3 Q* d. h ]8 [/ i- P
<statement sequence2>;1 ?8 s+ V: w+ q& n( f
end;: C% _, b: {5 J6 q
(2) while <condition> loop" N6 p5 A$ a* k. c% D1 U
<statement sequence1>;# i% c4 C( M" o+ V3 ~, R7 y
end;7 Q5 ^" E1 f2 K% M% q
(3) repeat 4 ^* a8 }& c- i
<statement sequence1>;
& Y0 G8 i: }( x7 Q; A until <condition>;, B$ a4 [1 K$ c6 }* o
(4) for <condition> to <condition> loop
6 f `$ Z' l. m. s/ q/ @0 b( b <statement sequence1>;% X N$ ]) O# d, E4 T! D
next;
+ T$ Q# F" w. B* o3中断语句9 v2 E) `* l7 x$ S9 A2 ?9 g5 I
waituntil <condition> prio <integer expression>;
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1 m5 N1 y V! a. y3 }$ f
以上为常用的函数！
' Y$ W& Y, H7 G& z8 O( f7 g还有很多，如有需要我把资料发到你邮箱里
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