Hi, This has probably debated here before but I could not find it in Google.
Though I don't have the standard at hand I've seen several references
point that operator -> has higher precedence than unary * (dereference).
Then I would always have thought that
*a->b
Is equivalent to
(*a)->b
but apparently it should be
*(a->b)
Which which is right and why?
Thanks,
Toni 4 1746 Though I don't have the standard at hand I've seen several references point that operator -> has higher precedence than unary * (dereference).
That's right... Then I would always have thought that
*a->b
Is equivalent to
(*a)->b
No, if this is the case then * has a higher precedence that -> which
contradict what you said above.
Also this is meaningless, it should be (*a).b but apparently it should be
*(a->b)
Which which is right and why?
The second one
Thanks,
Welcome..
Abdo Haji-Ali
Programmer
In|Framez
> > (*a)->b No, if this is the case then * has a higher precedence that -> which contradict what you said above. Also this is meaningless, it should be (*a).b
Silly me, I just assumed that 'a' is a one-level pointer, which is not
necessarily... Sorry
Abdo Haji-Ali
Programmer
In|Framez
En/na Abdo Haji-Ali ha escrit: (*a)->b No, if this is the case then * has a higher precedence that -> which contradict what you said above.
This is just what I thought, it was just one of those occasions where
the feelings contradict the logic. As (nearly) always the logic turns
out to be right.
Thanks
Toni
Abdo Haji-Ali wrote: Though I don't have the standard at hand I've seen several references point that operator -> has higher precedence than unary * (dereference). That's right...
Then I would always have thought that
*a->b
Is equivalent to
(*a)->b
No, if this is the case then * has a higher precedence that -> which contradict what you said above. Also this is meaningless, it should be (*a).b
(*a)->b is not necessarily meaningless.
#include <stdio.h>
int
main(void)
{
struct foo {
int b;
} c[1];
struct foo *a[1];
c[0].b = 3;
a[0] = c;
printf("%d\n", (*a)->b);
} This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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