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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
% G" G' `) a3 h% \, A% q if <condition> then* H3 A) g( U% g, f4 ^
<statement sequence1>;% U, c6 \4 }8 j' j' J0 M* O% `* H
elseif <condition> then
* R! L' j- p/ Q' A. j0 h <statement sequence2>;
8 z' Z3 ]! I( ~/ ]. E5 S. p else
" J9 o* l% n8 r- }% X! Z+ j0 a: t <statement sequence3>;0 L/ S2 H+ M& @+ A, [ n$ @! f
end;+ r& }3 u* l( \6 |7 x: Q) L( T9 V
如果分支比较多，用：
4 g) \! j; E2 ?1 Y2 R- \8 Y inspect <expression>
& M$ \6 [$ `5 V! \; r; w when <constant_list> then( A7 Z3 q1 v8 i! O! R8 R t
<statement sequence1>;1 Q' s* }$ H6 \
when <constant_list> then+ f$ r# [( M% I3 K
<statement sequence2>;
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else
8 B* L; C) Q, J: g# y0 \. E9 X <statement sequence3>;/ u* H; S3 Q" P
end;
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2循环语句
" S A1 N# E n (1) from <statement sequence1>
7 N1 k& a8 }+ p. t2 | until <condition> loop) B5 v7 t/ Z4 c
<statement sequence2>;
* i7 M8 F- i, w! \ end;3 K0 U( x" c# \2 f0 z; ]
(2) while <condition> loop' o0 M' h7 |- M# d1 N) D( W: |" v
<statement sequence1>;
# d; h0 Z) {+ [! |# E9 c$ n end;
. I8 L' l3 g u1 B1 C5 V; H( n3 J (3) repeat 8 J" E# \/ `; V) ]" f3 ]
<statement sequence1>;" }7 j, A5 [/ t
until <condition>;" S) e, z- U/ }# X3 q* N
(4) for <condition> to <condition> loop: B: u' ], V5 h" p" m6 z
<statement sequence1>;
% i6 H" F4 y# ~* u4 M5 p next;
1 C* i6 X% e& F" |( B1 y ~: w' `3中断语句
0 U4 e7 b( V" ? waituntil <condition> prio <integer expression>;! i! [6 m4 Q2 v6 ~2 ~
* p0 r# Q5 G6 i2 ^
( ~' ^& O$ @: k* U6 Y* y' `以上为常用的函数！
3 e" [7 ]8 T2 O5 f: I6 Q. E还有很多，如有需要我把资料发到你邮箱里 9 ]- i% `5 @; j% P
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