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发表于 2012-11-13 08:48:12
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1判断语句+ k7 N+ W6 M- b% |
if <condition> then; {+ _# s9 B) d4 s' U3 R
<statement sequence1>;. B. G3 B: l. { G8 ~. O9 V/ F0 g
elseif <condition> then
% k6 U* g6 h9 U9 ?* f8 h <statement sequence2>;+ d! [- e O+ U1 O; @5 g& h
else
3 U5 H, L6 N) s. r <statement sequence3>;
6 `) C; \- g6 O1 t. g. B. z end;
# E Q/ g5 x" P0 L如果分支比较多，用：
' \0 f* x" |2 G2 j& f' D inspect <expression>
2 K* O! u0 r( O6 r( g& g. r when <constant_list> then
" F% t$ m! ~; |$ F <statement sequence1>;5 Q2 S Y0 [3 M% l
when <constant_list> then/ J. r+ S9 n& a4 v2 e, w4 D4 X1 O
<statement sequence2>;$ g/ E7 f4 A8 K7 V) [. s R; Z
...
9 a9 i2 Y! s$ ? else
/ p# Y: w y& S+ k <statement sequence3>;
: r1 e% @6 f' S8 F wend;1 `9 z% ^$ m9 X4 y3 Y; \ d0 T
' G9 j h0 h' c- V2 m+ u: S% N! @2循环语句5 v9 _( T, m+ v& u, J; B" e L% z
(1) from <statement sequence1>
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<statement sequence2>;
: r# {- I5 n8 V3 {0 }% z, L end; C/ a8 y9 w& x" t5 v
(2) while <condition> loop
5 g# o: r) i+ E* { z0 a3 U <statement sequence1>;' L. {1 O* g/ O8 k' }+ X
end;8 ]5 Q9 n9 k: `5 s C5 W/ D; M
(3) repeat
$ X# O6 y( z: D" G5 e+ [ <statement sequence1>;
9 i2 C# o; v: T4 U1 C0 f until <condition>;/ N# j* A z, u
(4) for <condition> to <condition> loop( x. ?+ I5 {. W( n2 @9 X: M) j% \
<statement sequence1>;
+ m p$ [5 D) e; O2 h8 C next;! F1 ~. B$ ~. z+ ^0 }4 ?8 \
3中断语句& ?/ E& Q% g' T- J
waituntil <condition> prio <integer expression>;* z. ]# [; U4 i: i% L! _9 ]
0 ~* a3 A- E! Z" F9 Q
9 y* A; r Z* o; x" h以上为常用的函数！4 u% o) x: D s& f$ U
还有很多，如有需要我把资料发到你邮箱里 - k" ~: c( ? x8 o7 p9 B( |2 l
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