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发表于 2012-11-13 08:48:12
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1判断语句4 h0 I$ |; x- s
if <condition> then! C2 {1 {) N! G
<statement sequence1>;" K4 p7 @# G" w8 c4 Y9 j
elseif <condition> then
; h6 ~- s; Y: ^( C' H& S9 m <statement sequence2>;
6 q3 T2 m( C+ j& d0 b else
0 a3 l2 h1 [: _' T <statement sequence3>;1 m5 W0 ~/ {; s- r$ | i
end;8 ~# E2 W: y0 l$ f1 Q* q a/ M
如果分支比较多,用:
% r+ f p; F: v" ~8 s u inspect <expression>
* e+ E+ J4 ^* w i0 D when <constant_list> then
0 @% X A! S/ T3 u* u <statement sequence1>;1 b: N) Q- u& }( {, u: U/ U: |
when <constant_list> then
/ M Q& D2 w5 M; y6 @8 M <statement sequence2>;/ u: Y( o: Y3 K3 }1 a) Y
...
; {) l! P6 k: z0 Q* u+ a else
. O0 Z0 L _% {: t <statement sequence3>;7 d- ?/ ?" Y4 u) _& x: q5 b2 c( t
end;
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2循环语句
' q- o9 O0 m B3 A- m (1) from <statement sequence1>" W7 `3 @4 U( ?* F
until <condition> loop; u. ?# [& l# [0 o, f8 l! |
<statement sequence2>;2 w0 s; Y! A& u( ^
end;
2 R/ b. ]. p: n4 b4 A: M& r (2) while <condition> loop: H! o9 h2 p# U3 J) M" T; B
<statement sequence1>;
y3 B! `# f1 R/ c) s end;
( d7 U# |4 x) Y/ L; p (3) repeat $ S, j( X4 D4 Q' W7 L
<statement sequence1>;
( V% z1 X& [ t* W6 }& h4 h until <condition>;' r- z- [9 s# _0 B
(4) for <condition> to <condition> loop
! i$ K5 w$ j" _7 F7 l Q <statement sequence1>;
% T2 n+ d7 L. y( b! g next;
" e! H: e! B) f+ J0 B$ j3中断语句- O. @, [9 Y; l' v2 ~
waituntil <condition> prio <integer expression>;0 ~" z4 I7 m* u2 T, \- h
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% ^5 b- T) m& A! W
以上为常用的函数!' h% M# R: V. \* i- N
还有很多,如有需要我把资料发到你邮箱里 " ]0 I R" Z% u. _! `4 ~
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