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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
! B# y; @+ O! ]) R if <condition> then( ]6 j% i& ~$ l8 [7 W
<statement sequence1>;
- Q- A0 [6 s7 F [ elseif <condition> then# S# r+ L, r: e, T* n
<statement sequence2>;
! r6 w: G+ D9 p) m4 r( ] else
6 M k6 T+ |3 c3 I% L9 P- p2 ~5 i <statement sequence3>;
7 z7 R b. b! A1 R end;' O& f* q) v! Z3 z$ {
如果分支比较多，用：. r( i' i3 p! T9 J: p# I
inspect <expression>' j0 i/ d0 K" A O% Y2 G7 @
when <constant_list> then
' [! M0 Z; S% A4 n <statement sequence1>;. Q! T5 v7 Z# h4 s
when <constant_list> then
: P: v/ A1 s% J1 P <statement sequence2>;
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else9 Q |3 B7 R- a% k! u9 N3 h* z' ]
<statement sequence3>;
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2循环语句
8 X+ l4 O' m% M6 D (1) from <statement sequence1>& O' m* E' o$ K& T
until <condition> loop
) n ?. O. N! L! f: d <statement sequence2>;; ?0 A# Z/ \" V% E, U4 x$ l, u0 E
end;
# y3 ]+ \8 t G# \ (2) while <condition> loop
6 p; \! V% ]5 c: I <statement sequence1>;
' V4 _ b: d5 u# w4 c5 x5 M end;
+ V7 a, }( e7 f& H- ]; U+ @9 [: s (3) repeat
* t- r8 M1 I7 A6 s$ y9 Q9 _ <statement sequence1>;
- J. j2 c1 E6 T until <condition>;+ v( |0 {: b$ n" x; w% @
(4) for <condition> to <condition> loop
' u% _) [& {8 w5 y5 i7 i <statement sequence1>;8 {3 _% O8 l6 \. `3 ~1 c1 |/ m
next;4 g e" u1 r1 l! I1 ?
3中断语句$ J0 Q! ~& t7 K3 d
waituntil <condition> prio <integer expression>;* t: x& Y0 H, s
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7 t/ \) \8 [% t7 `# h( b4 l以上为常用的函数！
: K. k r& c2 g+ m: L) x还有很多，如有需要我把资料发到你邮箱里
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