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发表于 2012-11-13 08:48:12
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1判断语句9 N9 ]6 x! L* p# F O
if <condition> then
e, e. c0 D, p2 a" D' l <statement sequence1>;& ?/ Z, g* Y% g8 x6 A
elseif <condition> then% Q# ~" \. D% h" \8 V0 Z) ]
<statement sequence2>;
1 v3 w5 s3 c, J. G; l else
$ T( m5 k6 S2 g6 y; Y/ W6 l9 ^ <statement sequence3>;
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如果分支比较多，用：" [' m0 ^8 K1 h
inspect <expression>
3 `5 J5 m& J" z/ J/ Q. D% C" K4 H when <constant_list> then
" C# N6 f& H9 ?3 X0 F& }* h <statement sequence1>;+ N, R4 k: `( q U/ v0 v; y" P
when <constant_list> then/ z' p& \5 o4 i# y5 i
<statement sequence2>; V+ N8 {( R" F6 Q. T$ j1 B
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else1 j m& R B1 O: {6 c" T
<statement sequence3>;+ U" `. g" Y# P
end;
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: f. N/ | {6 t% y% U# {2循环语句9 z$ W9 g9 Q5 @( f/ p- G) S
(1) from <statement sequence1>% F- f6 _+ K( o+ k) }& X9 L
until <condition> loop
' B) Q5 {' Z5 k! Y) T <statement sequence2>;; ^. R: s, _8 ]6 j. a7 j+ N
end;
, D4 N9 q: t& j6 V ]) K (2) while <condition> loop
5 k. g. k+ _; r: z' ? ?2 u) V <statement sequence1>;
6 T2 {" \3 d1 l) \% |' ? end;
0 s6 y5 x8 h, [5 B& G8 m* B3 q4 a (3) repeat
J- I* F: x3 z B4 |' h <statement sequence1>;5 r% ~! T3 f" w; N" i1 h- D
until <condition>;
" b) T! z( Z6 H) n0 E (4) for <condition> to <condition> loop( V# G2 l. S' _! k- j3 _
<statement sequence1>;
! I+ R! Z8 e1 K$ c h next;
' o8 h4 ^: n- J' e3中断语句
^; y1 g' W# Q/ y% |- t$ ] waituntil <condition> prio <integer expression>;
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以上为常用的函数！
6 K5 F$ p0 S8 F r/ l& ]8 t还有很多，如有需要我把资料发到你邮箱里 . n! E; l9 _0 j3 h$ a
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