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发表于 2012-11-13 08:48:12
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1判断语句$ [* {$ [- D& T! E8 z3 _
if <condition> then
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elseif <condition> then4 y% B7 e7 {1 w! @
<statement sequence2>;3 p% y; Y# ~( x7 I) \
else
( r9 A# r! A. T4 x+ h% P; K <statement sequence3>;
! F- z. g, D- J# ^. z# x5 [ end;
. B6 l0 i5 k% v6 V, m如果分支比较多，用：
0 d8 F/ i* E8 J inspect <expression>
* N. G5 T, y" x( N$ B- J: k when <constant_list> then
: ]+ A2 e+ H, s8 \$ T9 i <statement sequence1>;8 Z" e. t: @7 }+ X
when <constant_list> then
- g- y2 y* p2 F <statement sequence2>;
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- t7 I# T/ r/ L6 n- m, C: a' h5 f else
# M$ W( G5 C. S4 M8 q% _. U. K <statement sequence3>;. B; U$ H) y7 W( K( R1 e
end;
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# {4 P& K# b: y1 E. K2循环语句
7 }$ t( s7 S) ~* y- } (1) from <statement sequence1>
6 b( z# e7 D7 h2 q( Y0 C until <condition> loop
& K* x1 ~ l0 u1 D <statement sequence2>;
. \7 a! g. z1 n: g8 w end;5 e# x5 v* Y# ]
(2) while <condition> loop0 ]8 Q- w: T" m% U m( a
<statement sequence1>;
* B) Q+ j$ f( R+ ? end;
/ u" b1 B/ [0 z- L; S4 r (3) repeat
( l1 q6 _0 s2 ~. u <statement sequence1>;' [) g6 o& ?& a7 |% ?6 A; @+ q
until <condition>;6 S# L" X8 T7 i, v! j$ t
(4) for <condition> to <condition> loop
/ O$ x0 C; S7 h <statement sequence1>;
. d& ~) u0 y# |: V) I next;
9 |) J1 n5 X6 \7 W9 B# h3中断语句
! U9 n' H2 v2 S- K waituntil <condition> prio <integer expression>;
' Z8 M! F. K9 T b. U* H5 J4 U& r* y
: b) T5 l$ b8 @' Z5 ?以上为常用的函数！4 V, b0 v$ Q& j$ ~& p3 ?9 S7 M
还有很多，如有需要我把资料发到你邮箱里
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