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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
3 x0 |" H- O: i5 t2 }+ w if <condition> then. z3 d2 D& H) a6 ]9 n8 U
<statement sequence1>;
0 s+ K" u. j+ J4 O; }+ m; W' Y# x elseif <condition> then
& e) F9 C" \* i0 V <statement sequence2>;
; x9 b/ n0 h: Z9 C- L else ; X. L) ~' [' j5 o
<statement sequence3>;& A/ A; T, e+ ~% ~ d. k/ g
end;! J" b5 E9 D }$ M8 _) z9 S7 U
如果分支比较多，用：
$ o" U; h! v6 o inspect <expression>8 \8 V0 V3 \) \4 w# J
when <constant_list> then+ _, u4 t* F) K0 e1 Z
<statement sequence1>;
5 [& b( h0 ] P0 @5 G when <constant_list> then
7 o% c1 b! P( e D% H6 P& \ <statement sequence2>;' |/ V0 X' d9 G) l
...% g' v$ _. K. S. q
else) j0 Q7 R+ a8 Y8 L; R& Q" I" F
<statement sequence3>;
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, L5 l$ v' B5 \' d2循环语句
% H3 s4 k% c; z( U7 D! e (1) from <statement sequence1>
: a; t4 n8 M4 n3 g7 j until <condition> loop6 H/ p& S2 d2 T! t4 `: m* d) e6 z
<statement sequence2>;9 j$ O( G N( ~4 u
end;* w" `% N7 c; e1 i1 F. C! e
(2) while <condition> loop' M( B$ U$ T; L$ V* v; p: j
<statement sequence1>;/ M! L- r, Z2 ^( X. y4 ]3 \1 F! ~$ D
end;8 G2 K' A+ k6 S( y$ M! S
(3) repeat 7 C4 N( D% D5 O0 D3 g; G8 N
<statement sequence1>;
+ L$ ?+ B9 {) C until <condition>;
8 w* S: G- O Y! ?. e3 a (4) for <condition> to <condition> loop
- M5 F7 ?$ b& O <statement sequence1>;
0 o4 M- ?8 R$ N/ g6 f& F next;
- p" W( \ \/ B7 X7 {( c6 p3中断语句
5 e: a* e+ C. D. o- L$ r: y waituntil <condition> prio <integer expression>;7 `1 l" j V r4 {/ o2 Z* z
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以上为常用的函数！8 G+ T/ Z- R+ o& v+ Y1 I n# L. V2 s
还有很多，如有需要我把资料发到你邮箱里 % P: [' M- _9 ]) @
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