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发表于 2012-11-13 08:48:12
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1判断语句
8 |4 }& T0 [& R& w- i if <condition> then7 m' I" }* }) t; v: @5 B4 l
<statement sequence1>;7 \: l# b, f' h. \
elseif <condition> then
, v4 ?; Q3 r' {2 U* I4 H" S. H7 T <statement sequence2>;: |( T& e) D9 P8 s! o
else
" ]# }8 s2 f. ~& v1 n6 p: q <statement sequence3>;0 n. o' p+ u) l) t9 {& i
end;
% b* z3 [+ Q9 k" {; `, l如果分支比较多，用：
; i) o W( v& W, t/ @3 g. z: B# V inspect <expression>
' @5 z, G; h1 Y8 K. F when <constant_list> then
0 R% j% u8 \- W( I' d <statement sequence1>;- W' @9 V% T) Z
when <constant_list> then* D# c7 \/ Q3 S' O4 K B
<statement sequence2>;4 s3 Q9 w7 s0 r' e, \
...$ W' J0 f9 r8 H2 n
else
( _2 d: J5 }8 j( K <statement sequence3>;
4 ]1 \$ i2 W. uend;" W3 S3 I5 R7 Y% p
" @2 \. r! v9 l2 _" `) X$ o2循环语句
. \6 I J* v3 r: y* G (1) from <statement sequence1>
1 P, o& f5 y- W6 M [" P2 Z until <condition> loop
, j6 p* @+ F `0 \* H6 }. a* A6 o <statement sequence2>;+ I4 I3 S: {- X7 d# h' ~
end;
) T' A) L* B, B6 W& F! t (2) while <condition> loop
! \0 W+ a% ~& B. o <statement sequence1>;5 g0 c5 H' A' G! ?) v8 n% v
end;; R- u# @$ O5 M5 }- T% X/ j& ?- W4 Z" X
(3) repeat 5 Y v' [$ ~& k
<statement sequence1>;4 {; L8 q2 U# G }; a
until <condition>;7 K; J/ Z! R# z" _/ O, M# Z- K) Q
(4) for <condition> to <condition> loop
, i# V+ y, Y: X7 f <statement sequence1>;. x- j6 [# C8 |/ a& R+ N
next;
3 l# }) O" f* x* Q3 v ~3中断语句6 o w; n% b& A) G. r e6 N3 _& o
waituntil <condition> prio <integer expression>;
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7 Q: }/ v8 n3 R2 A% U. F
以上为常用的函数！
9 E; p2 I2 V& [" s1 K8 P; Z+ r还有很多，如有需要我把资料发到你邮箱里 ) I) g% E2 i2 f( ^. N/ W' q
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