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发表于 2012-11-13 08:48:12
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1判断语句
' \3 b4 o( z9 r if <condition> then) Y) }- e# d J: `* e- |) U0 Q
<statement sequence1>;
+ s7 l8 [6 B- W/ O elseif <condition> then
2 U) n( r9 H5 ~$ L% O/ J <statement sequence2>;# P$ g) @/ t3 H: B0 ?! r
else
: ^' W8 F# n! J- E- U! V7 } <statement sequence3>;
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如果分支比较多，用：' v% @' u! ]0 W
inspect <expression>8 w1 t2 r8 W) B9 {6 F5 W+ l
when <constant_list> then) I8 n3 m; \1 h; G! z
<statement sequence1>;. Z& x+ }' v" g& g2 `
when <constant_list> then
, p& q5 m0 n8 i" A2 Z <statement sequence2>;4 T; k6 E/ r4 e8 k* U+ r
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else# C. l+ f9 d. e* e7 K) J1 @
<statement sequence3>;
5 M# \! B4 |/ R7 o8 r2 Q1 B5 @end;+ y" ~5 ^; D/ Q
1 P+ p( l' S Y# U7 L* a7 K2循环语句
; g6 P: }' P: j4 L7 D3 F8 a (1) from <statement sequence1>" M/ {+ e; P; H& k% M% h5 f
until <condition> loop
" d- Q* D7 a3 i; a. {, P4 Z0 o9 x <statement sequence2>;
$ z7 B2 o2 q! a* U5 T$ K end;
" [; k+ J. Z& z, F( a- A# b) W (2) while <condition> loop2 Q6 I2 T% s: |6 G1 v
<statement sequence1>;5 g7 r0 |! [$ f2 i
end;5 n0 ^8 W2 r/ D) J3 Q; Q
(3) repeat
" y* k* A) W% E% \; V <statement sequence1>;
* O8 f$ m- X! S" x6 q1 y$ R( B ] until <condition>;& Z( ?7 V$ s4 X X5 \ D# m f
(4) for <condition> to <condition> loop0 }6 t2 x# v( ^: t5 Z# J8 X
<statement sequence1>;
4 N9 E9 J4 J1 M/ | next;
* M' z3 _; Z. i. k$ |2 o1 {% {7 ^3中断语句
) r' b5 Q9 \: r( _ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
! b. B' `; @9 F; B g7 J还有很多，如有需要我把资料发到你邮箱里 4 R5 x' B7 s; o9 V2 q- d2 q
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