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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
2 s8 X* H# l3 d$ q$ @2 k+ s8 d if <condition> then
4 u5 F7 a2 z' l, L <statement sequence1>;
' `. [+ Z! @7 H5 i+ M* q elseif <condition> then3 M" f1 N& _! L! W6 P8 d
<statement sequence2>;) i0 U9 r3 J: s4 }0 O, E
else + f& u4 W& E" Z4 C* {6 C
<statement sequence3>;' h+ \' ~! V( V& C/ ?* \' S, J
end;7 J5 [- v* h0 d, p, I w
如果分支比较多，用：
1 ]( A2 {0 S0 j% N5 n7 V inspect <expression>0 _$ G# m- F# o" E, ?7 O# F- y
when <constant_list> then6 Q; s- _+ k' Q
<statement sequence1>;! U$ P0 u' {$ A' _# E4 z
when <constant_list> then
: L+ F3 Q. E' _% u! n0 ] <statement sequence2>;. M) P+ M( F/ Q L8 {
...- t3 e2 z7 R# t) I( [0 a' h6 u3 i! J
else
$ P7 s1 ~4 i( J# [ <statement sequence3>;$ ~) P- q$ N( Y8 v3 A; g
end;
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2循环语句' ?; d- G7 n5 d1 Z' @* P5 p. h3 x- R4 m
(1) from <statement sequence1>* S( q6 f1 |, E; G7 C: D; ~* T
until <condition> loop
! j, U' v# I' y/ j9 ]: P <statement sequence2>;
- O. h, z# ?# A; i1 l; T8 j end;
6 y F! R+ `9 @4 P- f (2) while <condition> loop
- f* u9 z( W; n7 D: B" [* o+ B <statement sequence1>;
, \) ]+ H, d& V- q% O1 d1 ], R end;
( C8 s1 f1 ~, e) C+ V U. b0 M& i (3) repeat ( V# h( n: q* w+ C6 Y2 b
<statement sequence1>;% h" F" {6 b2 `7 E! }2 y
until <condition>;1 @" i0 d0 d. n1 @( j
(4) for <condition> to <condition> loop, f( x' W8 I4 z. J" t' d0 w
<statement sequence1>;
$ Z2 o. m- ~" R8 X next;
" A5 H6 {( b9 F* P6 D; d3中断语句
- \8 v' e6 X& U- p7 s waituntil <condition> prio <integer expression>;6 `/ B1 I) K7 [. m9 {
@) t- M+ Z. t* j
* v G5 D% \4 T J以上为常用的函数！
& X# X' C: N9 K" a# Z& Z$ i) I还有很多，如有需要我把资料发到你邮箱里 7 z% ^& k# h- n3 X: `" p
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