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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
- L0 z! F- j+ [; E if <condition> then" P+ |; |; L+ a* [
<statement sequence1>;6 L" g5 O9 e) x
elseif <condition> then' [7 i3 m5 v9 _& g7 N
<statement sequence2>;
% v3 L) e# Y1 F# W: @3 Q8 X7 o! h else
+ `' d0 C5 I. D6 j9 R! j; M( D) ?' x <statement sequence3>;* @3 J& [3 C' \2 Q5 |) k9 Z
end;% f) l1 ]* V+ H' E$ @
如果分支比较多,用:
4 m4 W) K- j. @! N3 M' X0 Z y inspect <expression># v. l4 N4 T! B5 b3 u. R @! j6 ^
when <constant_list> then
! m. x2 D) K0 B- U <statement sequence1>;
7 b! \2 F2 w3 L2 M+ j1 C when <constant_list> then% Q; C' Z& j) T1 k
<statement sequence2>;3 Z7 u6 {, ]5 j
...
. }" ]3 e" R! d# T else
' L& P- v/ S7 V$ @0 }. R <statement sequence3>;; ~6 `( B+ O& [3 ]# D
end;0 R* G$ a0 ^& Z+ R
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2循环语句" g' m- J3 {3 x" |
(1) from <statement sequence1>
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<statement sequence2>;
& u# y& x% U/ e& A4 h end;
- J1 O7 k+ C- f5 u | (2) while <condition> loop
+ m* n( H! c9 l7 ?1 P) k4 x3 Y- Y, d <statement sequence1>;
; x& S3 C3 X' D+ x* D8 Z6 Y end;
* f M+ i3 t5 p S; \ (3) repeat 6 V' g: z% o# f* O! W
<statement sequence1>;
3 ^6 d+ ?* _8 g, y2 V until <condition>;4 Z$ T! ]+ P; v
(4) for <condition> to <condition> loop6 `2 T/ ]4 J/ c; C4 {+ Y8 m& y
<statement sequence1>;
7 O" f) |% o$ a! }2 [9 v) ^3 m5 D next;9 l# Y: z/ A- g' l' w3 ]
3中断语句6 B: x# m4 `6 Y- |; ]
waituntil <condition> prio <integer expression>;. N% x: \& z/ m7 Q
5 f1 r% x: }; P* f& m
( {0 e9 r6 y2 _, S
以上为常用的函数!
+ Y# o6 C' X P/ U6 v, O还有很多,如有需要我把资料发到你邮箱里 % `/ a! G' P, x6 T& F
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