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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
* i- s! q! o: a( X* H/ [& }6 R d9 l if <condition> then
1 m1 q! q9 u8 P7 O7 E+ H& F8 [( n. [ <statement sequence1>;
6 W1 x" R* u- v elseif <condition> then' B1 ~- Z+ p3 k; }' w( _
<statement sequence2>;8 n. [$ n, e- ~7 O! f' ?
else 0 e4 s, R2 Z9 P/ z
<statement sequence3>;; E _. d) M6 c
end;
: O& T5 P8 K: O( S- c如果分支比较多，用：
- t) M& R- h- g/ H, S- Z inspect <expression>
/ c8 n/ x8 M1 o% ?( ~ when <constant_list> then
6 d5 [$ J, s& U& a% b& W <statement sequence1>;
/ K/ w& t6 @/ d! |' C when <constant_list> then+ T6 _8 t" F# p
<statement sequence2>;/ ?! Z0 G( w% |0 j& w1 [
...3 I) Z3 [6 W; f0 b( B% g2 M$ u7 @
else; j& l/ f3 ]& [# X! N0 a d
<statement sequence3>;$ q4 D1 d" A- d1 H
end;
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2循环语句
- H' F# H+ x3 z (1) from <statement sequence1>
, v% W* b. g+ M+ A' y1 }8 ~ until <condition> loop
2 I9 e3 V6 c) [0 y' T <statement sequence2>;! G5 v# \# S) B1 e) N8 j
end;8 ]1 Y6 v+ K8 b2 ]* S
(2) while <condition> loop" n, {) d% c+ p" V
<statement sequence1>;* J! M& R( D8 M
end; j. o0 P! K( B) G/ X# q
(3) repeat
" C' n& z2 g% u2 o9 m9 f <statement sequence1>;
: g5 n: q- B* g" T- {! i until <condition>;& T/ l. }$ C# I+ p1 |
(4) for <condition> to <condition> loop
! P$ s I' ]" X <statement sequence1>;
9 y" I( M0 O# D# C6 @. u" S A next;
% [* R: A" h$ h- C3中断语句% \" B7 l( ?* b1 r1 N Q9 {
waituntil <condition> prio <integer expression>;
+ [ o( K8 M: T; v3 F1 |' E3 B
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以上为常用的函数！
) m" B3 U7 }3 [ T C还有很多，如有需要我把资料发到你邮箱里
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