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发表于 2012-11-13 08:48:12
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1判断语句$ Q. F ^) C# w$ D. R
if <condition> then8 L. N7 a, H2 T0 F
<statement sequence1>;4 L& l/ ?( {0 y5 X5 }1 x# U; r/ M
elseif <condition> then
+ Y$ X& w6 T' F' j, e <statement sequence2>;* }$ \' |5 I/ u0 i/ o N
else
; G2 w7 M3 {' @) h <statement sequence3>;
/ _( i- d' V9 w+ C" O2 a8 J- r8 u9 s end;
$ k- {- T" Q. X1 Q0 u如果分支比较多，用：
3 ?# z$ g( h, F7 y inspect <expression>
6 ?5 A( O' s9 U k when <constant_list> then
. f# Q/ f2 z# c5 H. M <statement sequence1>;
$ R$ V V2 j- t when <constant_list> then1 t% I: T, u5 ~4 A. f
<statement sequence2>;
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else
* `! n( o9 O8 }1 \4 \4 Q5 l <statement sequence3>;
' D' i" O9 X# M# Cend;: h/ h! j5 B2 v- Q& n0 Q& K( q) p1 V V
, C2 c! j1 e! V2循环语句6 \: Z7 t: Y* y3 P1 d w4 u( k
(1) from <statement sequence1>0 L& n! ~7 c7 H0 X) H
until <condition> loop& O" x' ^, h3 m3 ^( n k
<statement sequence2>;. ^5 c. U9 |$ [ H8 m
end;2 R$ q- @* a$ A+ a/ I
(2) while <condition> loop: I) I% C7 w: F3 c' g
<statement sequence1>;% p* D7 {# J: j+ U: p7 i
end;$ b* X! d/ O2 a4 a
(3) repeat
3 J- i& |1 V+ a5 \# N: A" W <statement sequence1>;* m9 y: N/ X# x/ o
until <condition>;/ Q9 H3 e3 T9 W$ S
(4) for <condition> to <condition> loop
9 Q1 l9 }5 J8 {2 J6 P) Y <statement sequence1>;
* Z) E0 A, {6 X0 D$ j; i next;
- T; ]/ J2 b8 h3中断语句
: s/ C+ G4 b% `" e9 O, g% W waituntil <condition> prio <integer expression>;
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以上为常用的函数！ f W& Y; t; q5 v
还有很多，如有需要我把资料发到你邮箱里 5 S& n( @' @( O6 i9 @
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