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发表于 2012-11-13 08:48:12
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1判断语句6 s; m9 q9 L/ P# X, @( S
if <condition> then2 l+ v" i5 I, W$ M9 ~/ \% a7 ~
<statement sequence1>;) ]6 B3 X4 z2 h9 a* R
elseif <condition> then
! b5 ^) `7 l( C2 S/ ] <statement sequence2>;
+ U# }# M9 M( \$ I. k! H3 w else % b: X6 `) ^8 Y$ v
<statement sequence3>;
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如果分支比较多，用：
, A4 `& o; j, w4 {4 {! g; a& h inspect <expression>
2 e* B3 a0 a* c9 v5 M4 _4 F when <constant_list> then! m$ u; `! c, p4 @. g0 ?
<statement sequence1>;
: |2 J! R7 ~% z2 { when <constant_list> then! a6 e' V: e: \ {/ Z* C, B" x( P
<statement sequence2>;
- N' Y% i }# Q6 I R ...
7 F9 ]. f5 s @) r else
+ c3 R% i- ^3 k& v <statement sequence3>;8 x z) _2 S7 q6 K# X" o
end; E8 ^- |7 U9 b- m& `5 T( O2 o
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2循环语句
( C, I' G, C5 j1 y6 N# j0 b7 y (1) from <statement sequence1>
N0 f1 O% `- b9 V/ L! ? until <condition> loop
4 t- j, b9 Y5 q& j <statement sequence2>;
4 D6 o/ z* \- A+ T- I! Q: q end;
/ O8 `6 d t0 [2 Y* e, u3 D( E8 H (2) while <condition> loop
7 }% m2 t# ~- L <statement sequence1>;4 t! E& m4 p h# H* N$ h4 D- t P
end;7 F' W3 C' Q' s& s+ f$ Q e
(3) repeat - u! G+ W( y* X, F3 `4 b
<statement sequence1>;& c5 W& p/ A3 c- j
until <condition>;/ z f( L% H' v0 V$ q2 F
(4) for <condition> to <condition> loop
0 H# B& v9 r5 J \2 i <statement sequence1>;* a) v% X& m& Y( j1 i* W
next;
" @! o( h% i* R" }3中断语句
2 H0 L8 E+ I, E6 }4 m* j- k* R& u waituntil <condition> prio <integer expression>;$ D+ [' y+ [; w: g& |& v
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7 j3 e2 M) V; T: m: f8 ?
以上为常用的函数！8 d) s- f0 g, G, j6 Q a0 G
还有很多，如有需要我把资料发到你邮箱里
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