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发表于 2012-11-13 08:48:12
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1判断语句# y5 f- J9 t# l7 M
if <condition> then. r& [% B# y0 R
<statement sequence1>;9 N) ?( d6 Z+ h9 S
elseif <condition> then
& N9 \6 d% [) w6 |9 R+ R F# r% v) k <statement sequence2>;" @0 ]+ c z2 L/ ]5 b2 h! z
else , z2 e% n- C3 B
<statement sequence3>;+ l; {# m% L, z) b+ _5 O1 K
end;" l: N4 i y6 w+ |2 j V1 A, U+ W
如果分支比较多，用：: ~2 G/ z5 @% {+ e/ T7 }0 [, D4 \9 x
inspect <expression>
# g4 e8 p( x- w; |/ s3 k6 K& M when <constant_list> then; {* L$ b5 J! W. `. ]; `8 j
<statement sequence1>;2 p/ R& N7 a5 A( a9 C% @1 m
when <constant_list> then
- I7 K& \$ j0 X* Z* O <statement sequence2>;1 C: d7 S( {) @+ u1 D
...5 p( G$ n, z7 b% ~: q
else
+ Y' Z l8 I; {6 x, @ <statement sequence3>;
" d) ]* P" M& ?end;; Z: C' Y- a* R Z
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2循环语句
$ r. b6 U4 h+ ? W/ I (1) from <statement sequence1>/ s. K. H* y+ t3 H
until <condition> loop
3 x2 e+ A* g8 g9 U2 q <statement sequence2>;# p4 c* r7 U8 d! N) o
end;
: z; w! s3 J V (2) while <condition> loop% g! A- c S d& J d( C
<statement sequence1>;" N, j* e5 w# r- t) ~1 H! x5 k
end;
; M2 b* b4 a; V (3) repeat
& ]- \1 m- A4 Q1 J <statement sequence1>;, C: W( Q8 B# B
until <condition>;
+ ~5 Y/ B1 |; A. u w8 {* @, e (4) for <condition> to <condition> loop
T8 [) f7 J8 s. t1 d <statement sequence1>;- [% W& J4 R( A7 j# S
next;* V& ^+ {+ s; {2 @3 j
3中断语句
0 D1 {: i0 `. Z$ [ waituntil <condition> prio <integer expression>;4 |. x' X. R; m1 G @$ f
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以上为常用的函数！
+ L' P7 J! c5 C) S2 R* \8 Z; i还有很多，如有需要我把资料发到你邮箱里
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