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发表于 2012-11-13 08:48:12
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1判断语句3 `8 A5 k% _! U$ b8 m5 ~
if <condition> then
% {4 X H/ b+ \ <statement sequence1>;5 h" O: K# E+ n
elseif <condition> then4 t9 f0 S4 P1 p
<statement sequence2>;
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7 Y' _' u* H) U/ ] <statement sequence3>;) b' G+ A, ]. h4 N- X- l
end; B( G8 K6 ~( h4 R# W" U c7 y8 x
如果分支比较多，用：
) d) Z. D4 A- o/ L' T$ ^1 ~, ` inspect <expression>
' L* f( E3 ]" ?3 V |' S when <constant_list> then/ q f: |3 w: S- F
<statement sequence1>;4 m: T& O' [( _4 A. F1 W
when <constant_list> then
# i2 } v, A0 a* ? <statement sequence2>;7 f8 M+ @; p4 j. l
...
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<statement sequence3>;
. h* }8 @! y% G6 w' pend;
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2循环语句4 p" e8 {- N7 {
(1) from <statement sequence1>% I* {( f7 t2 ~ D
until <condition> loop
" D3 X4 i2 ^( T) p7 t <statement sequence2>;
1 l& O2 j% D9 i, ] end;: p) U; U5 |# v
(2) while <condition> loop
/ @- V0 b# w9 G) q; }1 d* Q) _ <statement sequence1>;2 I% D$ \1 g: i" C [. _
end;
0 W3 u9 `* W6 k% O% i. B: n" W (3) repeat
7 ?5 t9 `! G( Z/ l2 ]" I6 Q <statement sequence1>;
9 D, h2 Q2 e6 f0 h, B; f+ k' h+ ?9 y until <condition>;% M' S' @( ?) {/ H3 a. x) x
(4) for <condition> to <condition> loop
, L7 D( u* b1 f! A <statement sequence1>; M h8 Q' X4 p! n) J; |
next;
3 x8 _# W& j$ `1 S8 Z9 i( [3中断语句
% v. A" i, b5 }! Y/ ? s/ H waituntil <condition> prio <integer expression>;
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以上为常用的函数！
8 @) q" T$ d# y/ d8 ]8 V9 j3 z4 a还有很多，如有需要我把资料发到你邮箱里 : D- e' R3 k$ V6 x; ^5 P
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