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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
# k7 O. z# Y; z6 C6 Z- N if <condition> then
( Q" _' Y7 q: |0 Q- J6 N$ u <statement sequence1>;- }9 v' |; f m, ~4 v) H
elseif <condition> then
* ?* \8 t% M: W: \* u% L- e <statement sequence2>;
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<statement sequence3>;" b7 \1 x: {3 `, a
end;
# B1 Z7 U! k; A( M- }* `' U" E如果分支比较多，用：
6 {5 Y9 f* H* i# x' _0 Z9 F inspect <expression>5 y' U" ^1 a: x. Q4 [+ o$ l
when <constant_list> then; G' |9 C2 q2 [2 f4 L+ d- u
<statement sequence1>;9 T. g+ H- n. ]& x* m
when <constant_list> then
) v# z% E% W, u+ y1 m. `5 F( ]3 ]$ G <statement sequence2>;0 L. m- ?" U, W2 {. h+ ?8 g9 k
...) E/ b' ?; c! R5 G& C
else: t6 w& C% Y' p+ @
<statement sequence3>;6 v: l1 d& Z- _$ B) \
end;! |) Y% i# N, N, E/ a. f
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2循环语句
: Z6 G; \* m* N0 o/ M) e (1) from <statement sequence1>
6 ~& X' f! H1 o$ l F% q until <condition> loop `9 U& Z2 \& l4 [$ k& h/ N
<statement sequence2>;
, a- @5 a4 y# c6 B E! @# X6 t9 \ end;$ E# p' \* F& R' T" |. g
(2) while <condition> loop0 `) O* {' P; w' P7 T
<statement sequence1>;" J0 U# a7 [7 K9 P7 H z
end;1 y- U/ b1 Z5 ?/ q# t+ O- d0 {& Z
(3) repeat
/ C# S: v3 z; u' O, a1 v/ l <statement sequence1>;0 |! h( _% u9 Y+ Z$ }
until <condition>;
( d7 k, Y m3 \% j+ r8 h" } (4) for <condition> to <condition> loop
) ~% o& Z& \0 [5 \! v2 P, R <statement sequence1>;
% ~/ b5 c( M5 N$ t next;
! N( c, f4 a1 X+ z! z3中断语句
* G5 Z. l1 [# s4 m0 N* N waituntil <condition> prio <integer expression>;' k: M% z1 |" g4 i, H4 R( |
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- o& }$ x* t3 N, ~, ]# l' n. l以上为常用的函数！
Q1 x G8 N8 C2 f! Z2 N还有很多，如有需要我把资料发到你邮箱里 4 G7 q A# ?, b; J3 v; g( l) e
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