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发表于 2012-11-13 08:48:12
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1判断语句+ j5 \3 G( u9 ]: t* Z
if <condition> then
; y# z, `$ K4 k) C1 l) B <statement sequence1>;0 p! U: i- `/ G
elseif <condition> then
! ~* r5 t) X f$ B% `9 h- n <statement sequence2>;
- R) u/ E- R; r: Z( c* T) Q4 U. i else
1 T0 ?- j* k# ^$ M3 k# D <statement sequence3>;$ ` [( u$ [% N% u; t# q
end;: o# E% Y7 n/ y) f0 E( k' J
如果分支比较多，用：
0 {' c7 J0 ]0 G$ p. T/ H inspect <expression>0 B2 t; G6 B7 h$ k- ^
when <constant_list> then
4 k; R; T% I g n: _9 }" | <statement sequence1>;, K/ b$ Q) ~" y' [: R6 E
when <constant_list> then$ E ^& O& |! |
<statement sequence2>;
+ o4 @( \# u, K/ g9 C- u: |' } ...
1 r" U: _5 [) J* s3 }! L" J else
( u; L7 r; f5 ~ <statement sequence3>;& n0 r4 R+ W2 a/ e+ _' o1 s
end;* o/ N, ~4 [' M* v
( z/ W/ Z; U# z' q2循环语句8 D& h; Q8 U5 k: _0 j, r0 f6 b
(1) from <statement sequence1>5 Q' g+ o3 V D: O( S% K$ k
until <condition> loop
; z8 S% @$ b1 t; i6 @ <statement sequence2>;
+ X& N& m- F L: K( v# T$ C2 g end;6 J$ d3 o) A8 u( C5 f
(2) while <condition> loop
: d& o9 N9 e2 g M, _* x' Z) [9 S <statement sequence1>;7 s) P8 `" G: W) ]
end;
7 v2 \/ z) g3 i+ r (3) repeat 8 a# U8 I+ q& Y1 }! N5 C6 F
<statement sequence1>;
- s( t/ l5 v; Q9 E) M: Y0 Q8 T until <condition>;& ^0 \; m) L: x6 u, O5 e% J$ N
(4) for <condition> to <condition> loop
" C, t0 M! _* U/ C$ X2 ?7 z+ x- u <statement sequence1>;
, I: T: L; {- `+ W% c0 D next;
: B) j5 I9 Q2 q% w* d! g# ^3中断语句
( P' Z: w* t7 z* h3 a waituntil <condition> prio <integer expression>;% _+ U9 c3 p$ J
, @4 R l% w1 v$ T& Q+ \
0 R; ?2 z7 M9 A: _- P以上为常用的函数！
! L/ e- R1 k7 ~' f6 F还有很多，如有需要我把资料发到你邮箱里 " S( L( U! j. |1 X9 W/ z3 n; Z
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