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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
" P7 Y; C4 f* |9 ^$ x if <condition> then- ^- f4 M8 I' U" }/ I8 o( ?' ^/ _
<statement sequence1>;% x, S* t1 D" O: [
elseif <condition> then
6 W, w5 c: [. u# A+ ~2 |' |3 _ <statement sequence2>;( ~7 a% }; ?6 y6 ]* ?
else 6 D5 m3 L* e7 P5 ^
<statement sequence3>;/ J. S% O" ]5 L( y6 d, t
end;
$ z x/ [" ]' j0 u$ b: m: c' A如果分支比较多，用：$ _. f6 a7 N$ {- ^ l
inspect <expression>
! S" J/ t. p3 \! X5 G, F, `! p& T when <constant_list> then$ C* X8 R3 ?6 s) B5 e- T& M
<statement sequence1>;" Z$ H# z6 ]4 {1 {1 {+ w; K# M8 x. y
when <constant_list> then
7 U) w3 s4 X+ Y0 V <statement sequence2>;
7 z F' d E1 i ...
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<statement sequence3>;' `. g, d/ k9 G- ^3 U
end;
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0 P8 X0 ^6 N6 p6 r+ C& V2循环语句& c7 [, T* s3 u4 W4 I& a
(1) from <statement sequence1>1 i. ^4 _, t4 s$ N
until <condition> loop! a# E8 x- \( r
<statement sequence2>;
2 \, F& h6 A" K2 z; } end;
4 @# ?8 W. i8 h (2) while <condition> loop) a7 r5 }4 R; t& |
<statement sequence1>;
! k {1 u7 v+ n$ I7 S6 m end;
1 E9 Y* [, `5 ] R (3) repeat
# c. ]- T6 r( J9 i8 ` f# o8 M <statement sequence1>;
, p( y$ r3 E- F# i6 Z/ r until <condition>;' y/ t8 a& L" `: ?. m* a
(4) for <condition> to <condition> loop7 _1 m+ `8 e2 \. q. Z- x# W: W
<statement sequence1>;
4 z$ ~4 ^' v4 B$ j% C3 ~$ E, [ next;
; o2 k, L- l4 P3中断语句
; X! \8 M& _ Y waituntil <condition> prio <integer expression>;$ X, _$ o( \1 H$ z" E. a
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以上为常用的函数！3 A8 P. y% n$ ]9 G5 B$ }5 R4 M
还有很多，如有需要我把资料发到你邮箱里 0 q Z; c: h% Y4 n) l
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