revers and array with only pointers :D

[vladi]

So i have this array
int a[] = {45,67,89,4,3,101};

and need to just revers it to

int a[]= {101, 3, 4, 89, 67, 45};

using no [] and only pointers.

This is for C we aren't allowed to use C++ syntax.

Can anyone help? I have the basic idea that i have to swap each element by swapping their address using points just not sure how to!

Thanks!

[Zhuge]

Just use a normal reverse algorithm, just replacing all instances of the subscript operator with pointer arithmetic.

array[n] == *(array + n)

[vladi]

I can't use [] anywhere in it except just declaring the array

[Albatross]

Zhuge was just trying to show two equivalent bits of code, and he's right! Instead of the subscript operator, one can just use some basic pointer arithmetic and a dereference operator.
*(array + n) is the same as array[n].

EDIT: Typo! Gah! :)

Happy coding!

-Albatross

[vladi]

oh ok perfect works now:D

Thanks!