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发表于 2012-11-13 08:48:12
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1判断语句! V5 v6 H% I; }, }& |
if <condition> then
8 F" N3 D$ h3 i* T* p3 I/ c <statement sequence1>;
' B; F8 a+ m/ f" f! _" ] elseif <condition> then" r$ q4 Y# z V
<statement sequence2>;, ^, P! d$ E% M! O) M3 w. [
else
" {& N a) E1 F3 Q* d7 l u <statement sequence3>;) i# i- _* V6 D" F( K& H
end;
8 H4 _3 M7 G! x4 R l. h* n6 n8 O如果分支比较多，用：
0 k& W0 l( S, B& n% } D. k inspect <expression>$ {. y: j; o& F5 u, G4 `
when <constant_list> then# |3 n% \! n- W/ Y$ Z7 `
<statement sequence1>;! q* o0 R, u# Y
when <constant_list> then& z6 s7 i9 T+ Z2 F0 R
<statement sequence2>;
5 S9 ~0 N) V4 \ p, U) G" u) } ...
# q; m: g B9 H, T8 W/ K else' m7 w9 G( d- B5 {6 v2 c) N, \) y, V
<statement sequence3>;
3 q6 O7 Y. I3 k4 E, q6 Uend;/ O# M! H5 l0 G+ o7 q( v; p/ v
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2循环语句
' B) D3 U3 G/ v/ Q2 I, i) e; z# A (1) from <statement sequence1>: s7 h! r6 V9 a8 d
until <condition> loop
, y) K. r8 q/ A& i1 X c8 p <statement sequence2>;; ~5 U+ M8 Q4 \) q
end;/ h1 T0 |* y2 o( ]& d0 v4 F, `6 a
(2) while <condition> loop
7 a, U: }6 t, l+ @ <statement sequence1>;1 i9 C6 p/ Z+ D3 u. a7 f: ~
end;+ k" x) ?- l" K9 J$ ~+ u. X
(3) repeat & n- L( t8 \4 v/ f. J- L' W
<statement sequence1>;# B+ x) a* J) y0 e
until <condition>;" p! V( o* D$ b
(4) for <condition> to <condition> loop
, a# ?+ K8 t" }' _! R$ A# W8 c+ G <statement sequence1>;
( ]4 P# t5 X5 v! o+ G r4 s5 P next;
+ w& g( z& T; ?! @3中断语句! Q$ H9 O. P6 z* p. h& v2 @
waituntil <condition> prio <integer expression>;3 q$ ?2 d& n+ F I6 n
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7 v! U/ e3 x/ h0 _' ^4 k以上为常用的函数！
# j8 t! `) o& L还有很多，如有需要我把资料发到你邮箱里 & N4 Q& @! W' t3 R0 Z# i
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