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发表于 2012-11-13 08:48:12
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1判断语句/ {3 V+ B, {4 N. f
if <condition> then" D. {$ }# W' b, f# u. a
<statement sequence1>;
' l( v% {) a7 r* g Y elseif <condition> then
. M) B' |% m, h <statement sequence2>;+ g- B% \/ Y7 o0 G. V% r
else ' J8 B! G0 @" u- f' e
<statement sequence3>;
) F9 o8 x# ^# ~ e( B end;
# f" u; ~; x E y; P如果分支比较多，用：
' O4 [% o: g( d5 M: d X' s inspect <expression>% F/ f* r" F/ B3 L8 C% D
when <constant_list> then
/ [2 k% r( e L- c, z) C3 J <statement sequence1>;
- V7 \3 h% z0 a; @" U' c: l* G b when <constant_list> then2 d$ [* |4 T5 s. e
<statement sequence2>;
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else$ D. u* r; @/ a4 i+ x, z
<statement sequence3>;! i# i( z3 f& ~- m$ ]
end;
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/ V0 c; I0 H6 G$ S" v5 ?2循环语句% [5 {! F2 K* B6 Y8 }/ e( ?
(1) from <statement sequence1>
& Y0 |3 \2 `! X ~3 t# b5 f6 B until <condition> loop; ~. B6 d+ V% n r8 Q. T% j
<statement sequence2>;( }2 b3 O& H! d1 _
end;' n$ o8 p. O8 M P' s
(2) while <condition> loop# y- h$ [$ t6 ~5 D7 h8 \
<statement sequence1>;2 Z; F$ `" N" s/ a
end;
6 j7 W6 A: r" O2 h* g0 x4 } (3) repeat / `! W& m/ Y% i2 X/ w
<statement sequence1>;
+ s$ S6 c& {) T a% i& H: j until <condition>;
k$ N6 m1 ~4 O& m- o) o5 ? (4) for <condition> to <condition> loop& V0 o) t6 l$ F5 n
<statement sequence1>;
) e& L! U% V; I- v4 [& @+ u next;1 p( Q" }% \! ?
3中断语句
$ G/ h; Y2 V: W: [0 `1 Z waituntil <condition> prio <integer expression>;
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以上为常用的函数！" {1 n9 n$ \6 E% i
还有很多，如有需要我把资料发到你邮箱里 : e6 C, n& E! U: J
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