|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句7 d I( b* ?. Y: b7 p( V; Z, O
if <condition> then& U1 j- J$ T3 b$ a4 b* t) y& {
<statement sequence1>;# l' r' ~ e1 _" U9 i4 x1 @
elseif <condition> then
# r1 _ ^; _8 \2 _ <statement sequence2>;
" A( b, K" [4 A- Z7 B! O, a else
, i4 O/ n; w) |' G <statement sequence3>;
3 p4 z3 z. f1 I& } end;0 @+ k' U1 W( ]
如果分支比较多，用：4 C% M& ~$ K- G) V1 u* g
inspect <expression>
' X( P+ f! K5 i) n when <constant_list> then; N) V3 H# F+ }2 h+ r" A5 A& _
<statement sequence1>;3 p5 u% a& V- `: N* u
when <constant_list> then
" f' Y; a/ y5 {% H* \* E0 j/ X <statement sequence2>;+ E% B/ _+ ~$ W- O9 T! g& Q
...1 m1 X7 |- H/ m& m/ p
else6 _: v! u0 \1 E( o: H8 ~0 b
<statement sequence3>;. X% l0 M, P( t1 U6 u' S# d
end;
* S1 f* K& a& E+ O
9 T% j; `( t( C9 l+ }8 J( Q( q5 f& M2循环语句6 d! P# p% U+ B! o8 s& E* K0 v
(1) from <statement sequence1>
2 s* U% |/ H9 \$ |( }: y until <condition> loop" L. m5 @$ \( M/ K1 d W
<statement sequence2>;6 m: |9 h) r; _& x$ u1 r o
end;6 }$ e+ ~1 P5 X* I, D" p6 H0 m; w0 i
(2) while <condition> loop# c8 M; O% p- E/ O# O% x
<statement sequence1>;9 j. w+ H3 S4 w& _; g
end;
8 t# @4 d& K! A0 w/ g/ ?- r (3) repeat 0 Z0 M! a: w, R( k( l" o: O
<statement sequence1>;
, W$ ]" k+ K! l' } until <condition>;
+ K5 T7 a0 g* S- z (4) for <condition> to <condition> loop
2 B' n6 e" T- { u9 T <statement sequence1>;
% H( D: F/ O0 Y! R! }) A% T next;" @3 I. w* Q, w3 z: X
3中断语句
. [. s; [ c( ^$ L3 b waituntil <condition> prio <integer expression>;
, R6 k! i- z* H, {% n& Q0 S& a9 w; a" h' F$ U
4 R# ^8 w9 O8 m! p) E9 C以上为常用的函数！) X8 ]' D% } r. B& \( r8 E
还有很多，如有需要我把资料发到你邮箱里
1 n& u5 G4 O' g; e7 C& [- z% T- t. ^0 H8 X$ V
5 U6 s" o2 M3 N( h: ^ j( v
$ Z9 J: O; t$ }3 A" F& [
: s S0 d; I1 R9 e( \8 F/ `4 Y2 b6 @
& J( U- t5 _' x
+ M* ~" p: W+ X$ F! C! c; P, k* k0 `3 Y6 ?
' }/ `* U5 @0 P0 o
2 Z2 r# L9 b* K' m
6 k+ f" Q0 _) R! Z |
|
[复制链接]
