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发表于 2012-11-13 08:48:12
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1判断语句
`8 f# K. D! j if <condition> then
) a" Y! ?- T h <statement sequence1>;
* U1 M" w! }* w4 Q1 d elseif <condition> then
$ b& `8 ^" b% r0 e4 h- F <statement sequence2>;
+ q9 x+ Q J% p9 J' B& H* d else
0 z$ C. p8 M/ Q8 J& o. f9 A) z <statement sequence3>;
- P6 t7 W' H! t! ]9 ]7 c end;
1 a5 K& G; U! e8 }" c( @5 i如果分支比较多，用：
! \% U' h6 t$ }2 g# T1 \7 I5 N inspect <expression>! ?% e# [$ h+ y
when <constant_list> then$ [' ^. F7 B( J2 y7 B$ Q
<statement sequence1>;2 Q( S6 g+ X; t' e* |7 t
when <constant_list> then& z( H; }/ q! i" e+ `2 d
<statement sequence2>;
8 p3 g( n0 q4 C ...
/ P U; e* V( L6 n else! k- _6 f$ U. H* T. ?
<statement sequence3>;$ X' a# I k; ~* d( I( d1 z1 N
end;
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2循环语句' M/ T- \( m* V5 q4 k3 X
(1) from <statement sequence1>2 |& f2 |" ]2 H7 z
until <condition> loop
8 d' E, F5 k& [ <statement sequence2>;& @" @5 c/ J, K0 r8 z7 n
end;, m( y' p: s6 C% e
(2) while <condition> loop) p5 `8 L( b6 v8 ]: W! o
<statement sequence1>;
7 Z' ^1 Y1 b. N& j8 e2 ^ end;# N" U! B3 U. ?
(3) repeat 0 g& K5 m% K" y! p# w
<statement sequence1>;
N6 H# x# _ G) |* j, v8 r( q+ z2 n until <condition>;
' q. R, u7 [: s1 P (4) for <condition> to <condition> loop$ {# W3 v1 C/ S* }1 n. K
<statement sequence1>;* e& D5 \8 V0 @4 o! x" d
next;" |; v i9 v( c# L7 Z
3中断语句' f, n3 }4 X. j2 k) H0 ?
waituntil <condition> prio <integer expression>;
% D- f+ F* s0 K* \; X+ ^# J6 M, U- o
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以上为常用的函数！
5 Z$ x/ F' s! B还有很多，如有需要我把资料发到你邮箱里 y8 _7 W v" w2 v( f! i/ q$ k( I5 [
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