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发表于 2012-11-13 08:48:12
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1判断语句
" G0 P4 Z& v& t4 o/ N) m" S3 j# M if <condition> then2 W6 s1 b2 M% z- r) _7 W" r) i
<statement sequence1>;
5 j0 g' G) L1 f) i. d5 ?( x5 ] elseif <condition> then0 T# e `1 @+ Q% [0 ?& B1 W& R8 J
<statement sequence2>;
- X' N/ ^: @. R, r" g else
1 V- d5 |0 t- }* P5 ~ <statement sequence3>;
, ~) `0 ^+ ?7 j* L end;, ~, B6 ]9 \! D, [
如果分支比较多，用： X! m3 b1 k) X
inspect <expression>! \1 w) ?+ \0 E0 S e' F+ u1 ^
when <constant_list> then
% d( M+ [7 U, C3 _/ q <statement sequence1>;
$ U7 K0 _' V# u* m when <constant_list> then
# L5 j: K6 E. S+ Z6 n* C, z' V <statement sequence2>;# }( B# i$ O/ W# S5 ^6 ^6 ^
...$ S* D5 ]* Z z! u4 U1 A& Q
else
. B [8 R0 Y% P+ A9 C! B. { <statement sequence3>;
$ R! \4 F) u# l( u5 Rend;, ]+ [( [ H+ ` N
! L1 O. x" {& ?( N. |' O& u. X2循环语句4 J1 ~. w: w }/ p; B
(1) from <statement sequence1>9 Q- g# @8 W8 _. Y
until <condition> loop8 W! N" _1 S3 r1 [
<statement sequence2>;
" s: H* J/ w5 ~- t* r }5 S6 Q end;
% c% |8 ~8 [; @2 ]' ] (2) while <condition> loop
2 Y- Y# e- u% B" O8 \! m# T8 L <statement sequence1>;
# [( ^- o0 l% a end;! p! x% X* F" s5 I/ S: D, ?! J8 d
(3) repeat
( \7 |% d$ U% n! R <statement sequence1>;
$ i$ g, @2 Z& r: y! g until <condition>; n, ` H1 W5 f
(4) for <condition> to <condition> loop
% u* H, ^( ~' \7 E* D+ d2 R. R <statement sequence1>;4 F" P! T8 A" q- z5 a9 @) x# f
next;3 g. k( x- w7 E
3中断语句& o$ C; M* b: _; n* R6 Y. O
waituntil <condition> prio <integer expression>;! @3 V1 J3 q1 O# F2 _
, q& s r$ \2 O* c8 K9 P
( b/ C% `* f3 ^4 r7 P以上为常用的函数！ t3 G8 }: ^6 P6 G
还有很多，如有需要我把资料发到你邮箱里
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