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发表于 2012-11-13 08:48:12
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1判断语句
$ u5 V9 p. o. u k* q5 Q if <condition> then
. A6 Z: `- R& E. p5 P <statement sequence1>;6 M2 A9 j* o6 ^' K& ~
elseif <condition> then
; [/ i* U) u+ @: m, F) F <statement sequence2>;
: Y- K9 l" V# z7 c+ L else
# }2 f5 N9 p8 t <statement sequence3>;9 P, L" O( z* N; R) U( v
end;3 Y# u* ~, o2 e- C7 I% L3 o; j8 r
如果分支比较多，用：
* A3 R5 F( [; q" S( S# J7 e inspect <expression>1 X3 y+ @# q7 Y) G. j. x' _
when <constant_list> then' e7 A# N2 P9 F3 W8 Y" E7 {
<statement sequence1>;+ }. y2 i" G2 \
when <constant_list> then
- T$ I6 q" t5 [" c <statement sequence2>;/ x1 K9 i* e9 a# R9 K u
...6 ^# H% e- h( J5 w$ F
else
! g8 m! z a' ~ <statement sequence3>;' E6 R9 |% r5 F8 p
end;
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% D5 Y0 }% [. f! |9 u# g$ i3 o# O2 M2循环语句
0 z U! k4 p+ R$ J (1) from <statement sequence1>& t' J5 T* R6 l3 |! g/ \; h
until <condition> loop
m, N! p; a2 r i, `4 K. n <statement sequence2>;
4 K+ k" D# |# f; u end;
$ \) ^2 f* B! i' x( I4 U, F (2) while <condition> loop
& P+ Q$ L8 p, E; w7 S3 I <statement sequence1>;$ H# Q7 h( @) Q
end;' n+ E: Q+ l( u2 p& L9 D6 r9 s* z8 N4 y
(3) repeat
, s' k) I O: C. n& E! ~ T <statement sequence1>;
! Q6 x0 g I \% H; ~. I! L4 A* x- O until <condition>; _4 H1 f& K3 ^6 j$ r, n6 p
(4) for <condition> to <condition> loop! d4 s1 U: d6 }3 g! H3 |8 |
<statement sequence1>;
?4 f3 W* U" m2 x: F5 O next;
0 W6 S/ g* d- v' |6 z0 v5 ?3中断语句3 O4 S( P3 h' I6 o7 |2 E
waituntil <condition> prio <integer expression>;2 ^+ q: h9 m, v; c7 [+ ?/ E9 X
% q% O t3 r/ A L- e& l- X
9 f- J/ A9 ~: L9 Z以上为常用的函数！6 ?" h7 S/ R" | ?: {3 v% y! |
还有很多，如有需要我把资料发到你邮箱里 ; F, H9 T: i: p
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