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发表于 2012-11-13 08:48:12
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1判断语句0 X" `1 ]# E( `0 C4 Y8 u
if <condition> then$ p, m5 W0 g" \: ]
<statement sequence1>;9 o# z3 S6 X* L
elseif <condition> then7 T& v8 _, F/ k7 |* z
<statement sequence2>;7 A8 a6 H; L0 w* |& f+ k, B; Q5 y& s
else ; a# [' M( [! Q- k' a" y+ \
<statement sequence3>;
7 h, n; ? l/ s1 C end;6 |% W/ z6 `# ?+ u) l5 M+ n* _1 H: c4 P
如果分支比较多，用：
! |) A: T4 C. g inspect <expression>) ]: x3 y: u1 S; d) t, K Q& X0 U
when <constant_list> then+ w% v, ~9 ~. o
<statement sequence1>;
! K8 h1 ], p) F2 Y' l# H when <constant_list> then1 M. G0 A8 R0 |7 k0 H* d
<statement sequence2>;
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else
4 m7 C4 N+ r4 z7 x8 ~ <statement sequence3>;7 C% q' N5 M& \7 p# C
end;
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3 F" K. T) j. `2循环语句
8 I( _9 a6 B9 s! g/ y8 z: l (1) from <statement sequence1>( J3 ?. V+ u. ?. `; `, h
until <condition> loop. }- P! |- m' ]+ Q& M2 ^2 r) q
<statement sequence2>;7 |+ M6 X7 n4 z; S
end;
! ~7 j: t3 C* } N, G (2) while <condition> loop& ^* a$ x& m0 |' s2 g6 M( v4 t! v8 U
<statement sequence1>;
0 F9 ?% I6 ?5 y6 l7 L end;
$ B$ ^4 T$ S |0 _* i1 { (3) repeat ( X: e- T6 r- N' t0 ^5 N0 t
<statement sequence1>;
- T; b5 X4 M- ^$ v8 d until <condition>;& Y/ y M6 w" u0 M' x
(4) for <condition> to <condition> loop1 V1 a$ X( c) V4 H( n; G8 T
<statement sequence1>;
P- a- T+ R0 s3 @3 f next;: Z4 m3 d B c9 p6 l6 e
3中断语句
1 |4 R2 {0 G+ Q: f8 D& q, B: T waituntil <condition> prio <integer expression>;, z4 r# h+ {+ D) D+ L& e; x
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以上为常用的函数！- q* N4 I2 l; s/ k& z
还有很多，如有需要我把资料发到你邮箱里 ; n% l/ P, W! y( `/ r
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