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发表于 2012-11-13 08:48:12
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1判断语句9 T7 R' i5 @' ]& m# K* Z
if <condition> then/ ~( F6 p6 ? G) s7 v+ g$ f) j
<statement sequence1>;
/ K8 J6 K2 v6 u3 w. o: } elseif <condition> then
2 e. h) v$ E6 l' F4 o0 z <statement sequence2>;) B4 D3 k' F' y* `
else % ]+ G. A5 M& g2 B, a' u
<statement sequence3>;
9 ^: o% |, [8 d; U, s! } end;
, ?+ P7 W8 \1 \' }, D如果分支比较多，用：
8 Q+ b3 N5 A2 a inspect <expression>- [6 C2 M4 H, ?8 F# G; N, b V
when <constant_list> then( I1 Q' K+ ]8 k6 }% f0 x
<statement sequence1>;
# l! o( ~9 B* ~7 p J) u when <constant_list> then- m0 \: E) E; k2 q( ^9 U9 i2 I4 Y
<statement sequence2>;1 J) q% I( l1 Y f- C
...
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<statement sequence3>;% [, @0 t4 k) h* `- O
end;
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2循环语句8 S6 [* @* h/ L! L3 i5 K7 W N
(1) from <statement sequence1>. p/ o$ Q' C& ]: y D( y0 T: F
until <condition> loop8 ^! q! O' C, I J' a$ K* j
<statement sequence2>;
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(2) while <condition> loop- }: c2 y& g2 C. } P9 R8 ~, b
<statement sequence1>;
6 a" s2 |. ?$ V' V, a end;
, C7 t+ Z4 t/ |* g. `- u (3) repeat
- m: X5 g& q+ D9 C! P/ q: C0 b' V <statement sequence1>; c- ~9 V& }( p8 F e' n8 }
until <condition>;
9 r! ^; _+ [) x1 j* F- C i (4) for <condition> to <condition> loop
( ]1 D$ H# A7 a! _) n* P4 D- C$ J" t <statement sequence1>;
& ~. S6 V; S! j5 `- X @( v next;
) ]1 O# @% D& r/ D M4 Q3中断语句 j$ ` `! k# C# f( _7 y
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
2 l" \6 n' D# ~$ J还有很多，如有需要我把资料发到你邮箱里 % l# P: v2 I! u7 R7 t
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