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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
. u9 [6 ~, g8 K6 j) u& B+ n) s if <condition> then
& d4 ~% D- f K6 w4 s5 l3 `. T. I <statement sequence1>;
4 R0 _7 l' j( ?' s, J; X elseif <condition> then! M+ D& u6 w/ D) x$ y7 x4 k: Y; r
<statement sequence2>;( ?) Y. x7 d; n9 y/ @0 Q
else
/ `5 N/ Z- c6 r1 C: v3 d* O) n <statement sequence3>;- y4 Z s) P, C! Y2 S, s
end;3 v/ P; ~: _! ^. `
如果分支比较多，用：
6 A2 _5 z- a& j2 g inspect <expression> R5 p. @. ]2 L3 e) u
when <constant_list> then
& O+ l- C" P2 N# j' s, M7 J <statement sequence1>;
2 R0 c, R/ t; N0 Q* k when <constant_list> then
! p9 Y+ D* H. u4 @( P k <statement sequence2>;
* O/ ?. P4 b! H: f( \ ...
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<statement sequence3>;
8 @' \4 l7 r. \1 b; V7 iend;2 d' L* L; A* S4 Z
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2循环语句
) l* S, g4 e3 k j! h (1) from <statement sequence1>! E5 G" u+ \, J2 @+ J
until <condition> loop: l9 H3 ]0 H6 f& m2 S
<statement sequence2>;
9 l- v7 f/ ~ U# b end;' ?/ `1 z7 C6 G( |: `. r
(2) while <condition> loop; Z6 `' `1 x2 ]" G; `4 ^( r
<statement sequence1>;; l |$ D# j, b* W# L$ Z
end;
& I; H, a* A6 y6 Y+ T5 E (3) repeat
! K" P/ Z0 |; X) F) H <statement sequence1>;$ V5 h* C" k" i# J2 E5 g
until <condition>;
, I w2 S4 Y/ V (4) for <condition> to <condition> loop2 u* A* k$ m9 O; Q9 k. u
<statement sequence1>;
* U. a1 Q5 h; m0 [1 a# [ next;. e/ i- l7 {$ K
3中断语句. |& n/ a1 E' F- m% M v2 o; j9 H
waituntil <condition> prio <integer expression>;
8 S1 j0 X2 [6 L& | [9 V# ~: @( ~9 v& D/ a4 F) c. T, u% C
% g7 K1 o/ w2 W! }% |$ V) L1 Y以上为常用的函数！
9 m$ P7 s5 g- E0 f i. w还有很多，如有需要我把资料发到你邮箱里
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