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发表于 2012-11-13 08:48:12
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1判断语句2 S0 R6 n" ^+ f5 V" u, z
if <condition> then
; s M( w2 u/ _+ ~6 \8 g$ D1 s3 J <statement sequence1>;4 C* ?0 B# Q0 y0 n
elseif <condition> then! o+ S# P3 k; h
<statement sequence2>;
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<statement sequence3>;# C& q& {- H* I
end;
3 r% T+ p3 P S3 e如果分支比较多，用：
) w& Y" x. T& n3 ? inspect <expression>
7 h0 x% D: L% S8 u1 u when <constant_list> then) a( y4 O; a3 F1 f
<statement sequence1>;' u) d ~% r9 Q' @' F# T' ?
when <constant_list> then
& R5 \8 L( \; i( m4 A <statement sequence2>;/ }+ E) n) C4 `) I$ }, T2 m
...
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<statement sequence3>;
$ o# b* f' q, Y- b% [1 Z- {end;
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5 x' d. a5 S( h1 G8 i4 H2循环语句7 S( W3 O6 S$ V1 p
(1) from <statement sequence1>
6 t- o% t$ ^" w until <condition> loop
, R, b" K: f) \ <statement sequence2>;
) i6 i. }1 \ p" ?/ L# T0 i+ i end;9 o% `7 v+ h4 c# J
(2) while <condition> loop7 x# e4 x7 r1 E+ X5 @: F3 E% Y& g" ?
<statement sequence1>;
" n# _. p4 |) M' `) H( ^/ ^1 T end;
! S c5 ]; W8 _, A5 Y0 g (3) repeat
( ~: g3 B8 W5 i; S0 `5 q" D <statement sequence1>;
8 x1 v; R, D" ^3 Q* d until <condition>;
6 d& F- y! w- E H; U (4) for <condition> to <condition> loop
9 m# {4 W9 F/ h& x <statement sequence1>;6 O h S. D; L/ G0 V
next;
" x5 E$ o% j C% p3中断语句+ ?" E" T ^. c$ {' J5 z! Z0 n
waituntil <condition> prio <integer expression>;
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* A! x& @5 N/ G. ~+ Y6 r以上为常用的函数！# j2 V" p7 b4 B0 p
还有很多，如有需要我把资料发到你邮箱里 0 N+ N8 \1 q5 d! v
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