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C: 如何使用(x->×>×......)
原标题:C: How can i write ( x -> x- > x ) using (.) dot operator
  • 时间:2011-10-29 20:45:14
  •  标签:
  • c
  • pointers

关于建筑和点工,我如何利用码头运营商书写这一表述:x->x?

使用arrow操作器:x->x->x I 易于成为第三要素。 用户:(*x).x 我如何利用码头运营商将第3项内容推到底?

I know arrow operator is a shortcut for the dot operator, so it should be possible to reach third element using dot operator? I could use a variable:

struct node *var
var = (*ptr).next
(*var).x = some value

这真是我。 一直在互联网上读书和任何地方,可以找到答案。

问题回答

Well x -> x is equivalent to (*x).x So you just do that twice:

(*(*x).x).x

*>。 如果你们感到不舒服,你可以做:

(*((*x).x)).x

考虑到x->y相当于(*x.y,然后适用该规则的两倍:

x->x->x;
(*x).x->x;
(*(*x).x).x;

never在现实生活中这样做,但

(*p1).x

成员<代码>x,载于<代码>p1标明的物体;

(*((*p1).p2)).y

is the member y in the object pointed to by p2 which is a member in the object pointed to by p1, and

(*((*((*p1).p2)).p3).z

成员为<代码>p3标明的物体中的z,该成员为<代码>p2标明的物体中的成员,该成员为<代码>p1标明的物体中的成员。

完全有可能用较少的亲子来做到这一点,但肯定有助于理解。

(*(*x).x).x

但为什么?

Nest 倾斜......

(*(*x).x).x

页: 1 至于为什么你想要做这样的事情......,很奇怪,就是说。





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