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发表于 2012-11-13 08:48:12
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1判断语句3 J* T+ D. d! b' K+ h+ @
if <condition> then
4 S( e' _) T# I8 t0 I. `: P <statement sequence1>;( P1 }/ C4 F3 D0 C2 \, w
elseif <condition> then4 D8 F) Q# q9 v/ V+ C H
<statement sequence2>;) v" ~" w* |0 v
else - ~7 o4 n, Q$ `) Q+ ], w
<statement sequence3>;
& M2 \4 T2 [, j. ]: c end;% \4 j* k- T* L8 j- s5 \3 f
如果分支比较多，用：, h6 s9 M* D8 a( @4 P% r6 n
inspect <expression>. V& l' c/ o3 \- J0 v2 G4 z
when <constant_list> then
- t! ]# U4 \9 o6 C <statement sequence1>;- s! p3 u/ T( P
when <constant_list> then4 g; i% N+ |& A
<statement sequence2>;2 f4 G: f) _+ N
...
# @3 n5 q+ R; l else
9 g6 h( _" m% h1 [3 o <statement sequence3>;
# m! ` D! i# Z3 v" Q7 @ N2 wend;
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! p5 s9 J/ t" P% K! i* h2循环语句7 D' R+ Q) \. |) v. t& A8 P' ]( G2 V& f
(1) from <statement sequence1>- L. f3 N: l$ a: Y8 b2 C D8 z
until <condition> loop
8 Z. q. m$ T) {, E2 i' g6 G <statement sequence2>;' L- f/ g" o* S
end;3 v- i! ]1 A7 m8 |
(2) while <condition> loop
, A% g7 _ @! `. r9 T9 Q9 w p <statement sequence1>;
% g' ?( f& K! o end;3 M2 F" h3 \- w. I& I! l/ p/ x* i
(3) repeat d+ `, v0 M: [- z
<statement sequence1>;
) q$ [& E7 h+ H& x! M; e until <condition>;: Q1 R2 T0 p4 `- y
(4) for <condition> to <condition> loop, V$ Z% B: n7 s. {( ^3 V* ?
<statement sequence1>;3 o: Y2 \4 Z3 z* S4 Q4 F
next;6 A* b0 t, y9 N* Z H( {0 b
3中断语句
* S: T1 W% ]5 b9 t waituntil <condition> prio <integer expression>;0 o! o# S5 n5 m5 b
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! Y% k0 Z3 R8 a( k以上为常用的函数！- C! R7 I% M5 R ?. U; d0 X* v
还有很多，如有需要我把资料发到你邮箱里 5 W& l+ M8 Z+ S, s1 O/ t
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