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发表于 2012-11-13 08:48:12
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1判断语句6 l+ Q4 w; f4 i$ N- u$ u; J
if <condition> then
5 q0 H* r9 Z# a& U# l <statement sequence1>;
4 \' ?. f& ]' { elseif <condition> then
6 e7 v1 W& N) s* r# w <statement sequence2>;
5 P9 C& D8 W+ E3 s0 ~4 w else
5 g+ L8 S6 L! J% D <statement sequence3>;8 \" V' n( I0 T- A
end;+ q$ P9 V$ q9 s$ w: A# w
如果分支比较多，用：
8 `5 `2 U0 ^) ~8 {* W. c inspect <expression>- j* ~8 i9 Q4 l9 T( \ ~9 z
when <constant_list> then
- ]7 w5 W2 d7 D' e. U& [& e <statement sequence1>;
6 B. P1 H% k) \; }$ d$ }! h when <constant_list> then
% A. M- X3 S; E' O" E0 N2 q! F1 h <statement sequence2>; m9 s1 Q: T3 s5 k p+ y
...
7 \' ^% d$ O; w2 g: c else; d5 w. u6 ^0 j$ j, w4 g6 Q& {
<statement sequence3>;9 S( ~" e2 u0 _9 T2 f7 U
end;
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2循环语句
0 d! Y( s4 x& Q+ J& o (1) from <statement sequence1>& Y5 I, m* _, V
until <condition> loop) q, V2 r* K! O0 z: G+ T4 j
<statement sequence2>;& l6 J( o: _! j! Y* _# Y
end;+ [' U; }+ y5 j$ m
(2) while <condition> loop
9 S7 a* e- \0 Q ?' ?. Y <statement sequence1>;' x$ j% y0 t7 Y
end;1 T; v1 w+ p9 t! U- X( x/ j; [5 Z
(3) repeat n' |7 E( [% j9 y0 Y4 z
<statement sequence1>;
9 {0 E# [: \, _- N0 n! F: S% M* o until <condition>;8 U( ^8 M! r8 x |+ J- n" N
(4) for <condition> to <condition> loop
) V* e* s. |: B' r, D( w <statement sequence1>;
( Z5 y/ W+ [) w( o8 d/ J, Q next;6 l4 P+ p" o3 Q4 P" _% G
3中断语句% i: s( O/ j( n4 f* e6 z
waituntil <condition> prio <integer expression>;
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% y& c2 p5 T( ~7 U# G6 o以上为常用的函数！
4 c5 }9 O P E; k& `; _还有很多，如有需要我把资料发到你邮箱里 & p# Z$ `; G: R
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