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发表于 2012-11-13 08:48:12
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1判断语句, P$ E1 N9 k- R; T
if <condition> then. j$ \1 e1 W0 P/ D/ E
<statement sequence1>;. V6 c% w) c' z2 Y
elseif <condition> then
4 N. ^0 F3 u6 n, p+ M& G <statement sequence2>;
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<statement sequence3>;; B4 }: \+ H7 }3 P6 M9 l
end;& x; R& @% P6 _( E5 f
如果分支比较多，用：
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when <constant_list> then+ |8 x, P1 Y- L" V
<statement sequence1>;
. G y; d6 @# l; c( d when <constant_list> then
1 q, X/ F8 a4 n+ E <statement sequence2>;; p# Q) d) z w2 y! Y5 w: T7 E% I. c
...$ ~2 }) R" X9 B* z
else! j1 {+ b' k$ k! V- e
<statement sequence3>;
2 k( [7 b9 @3 q0 _; T8 A# Gend;
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2循环语句
# d1 Y/ y s0 [- f! y (1) from <statement sequence1>
q+ N( ~: }$ k until <condition> loop
: ^, l' k; M( L0 T <statement sequence2>;3 r2 s J% b5 P1 o& G
end;. f: ]' e' F2 w u1 w: }( r4 j
(2) while <condition> loop
- S6 n0 M" |8 f) f: `! ^2 y <statement sequence1>;$ q, d- W! ?, `3 {
end;
1 [+ W4 o7 e, X0 g/ b" r (3) repeat $ |0 Q5 ^ B; ^' `
<statement sequence1>;7 Y, \* f5 p+ t/ z* ?" ~
until <condition>;
9 Y- x, o8 z! ]5 P% H5 s) Y (4) for <condition> to <condition> loop
5 e& j4 W j6 p) Z6 W" c <statement sequence1>;# W. B9 {( T/ l
next;
/ j, H+ d% Y7 o. v9 T3中断语句8 ?% D l5 H+ G/ `
waituntil <condition> prio <integer expression>;) q) y$ f8 P2 `, s8 `4 a# F& h% @
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以上为常用的函数！
: v* }+ I0 z( z+ y, W还有很多，如有需要我把资料发到你邮箱里 & q& d+ F( u) V% p5 @) P& b
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