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发表于 2012-11-13 08:48:12
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1判断语句" c4 p2 K: B% X" K; _0 T [
if <condition> then
% z" K" ]4 k/ r; Q <statement sequence1>;2 E6 y1 Y1 x, n3 v6 n2 C' X/ q) G
elseif <condition> then
5 Q4 E* x" n2 H <statement sequence2>;
- ` Z* a7 D) c) e1 Z' v, Q% t3 c else
% Z" I& s( \" f& b; E5 l <statement sequence3>;
. ~. [/ w! e/ O- S end;1 u/ K% Y6 V1 b; ^
如果分支比较多，用：
% W( P; W2 w! S* J" ]9 A8 _9 {2 c; Y9 Q. } inspect <expression>- C4 h$ u& [$ Y/ P/ J/ A" |
when <constant_list> then8 Q6 R( e0 ^+ d/ d8 d
<statement sequence1>;
! k% y* n% J7 A5 S when <constant_list> then
2 j, S3 E4 G1 g9 [& t1 l7 B+ q <statement sequence2>;
9 J" A! U2 w$ W" G ...
9 I5 u3 R G* I else
3 r6 ]0 E, v0 O) ^/ v# a* { <statement sequence3>;
9 k0 g% }" B0 N" ~* v" b. dend;
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# z, Z5 G- i; j7 C3 ?, P* f2循环语句
5 e o* s, ?, i# i0 Y1 }# O( D (1) from <statement sequence1>
0 |) G/ s* Y0 {$ D2 O; h. N' V until <condition> loop- d2 r5 o Q) ` g
<statement sequence2>;" T7 }; ]7 l m
end;9 Q; p- }+ S6 j7 K$ \( ~! P
(2) while <condition> loop
# a4 l) `: R" T8 J1 p' t <statement sequence1>;7 [* I V+ B* t& @ l* l4 g8 h, k0 F E
end;
8 T1 R! X5 v; I) ^! S4 r# \ (3) repeat
- J9 T2 g4 b! }* v0 r5 o7 [ <statement sequence1>;
6 W/ Y3 F0 P z& [. O, k' p until <condition>;
) q9 k5 V+ B n5 {8 d8 D7 w (4) for <condition> to <condition> loop
9 R, s" G: H1 ]( A s) {+ H <statement sequence1>;) M/ k! t# I O
next;
+ ` |- \0 x+ r B1 M3中断语句. a6 F6 G ^! a) m3 H
waituntil <condition> prio <integer expression>;! V) Q( C( S& c3 b! z
0 K) o) M5 k# A
9 Q5 l$ f; H. n% ^以上为常用的函数！) f, ?9 q5 f. E4 q! u# s$ F( t
还有很多，如有需要我把资料发到你邮箱里 : t/ K5 J, l# Q
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