Pointers and Arrays??

[Sephiron]

How are these three different from each other:

int a[3][4];
int* a[4];
int (*a)[4];

?

My goal is to create a 3x4 2D array. I can understand the first and second statements. But the third I have no idea.

Thanks in advance.

[Husky]

The third declares a pointer to an array of 4 elements.

Here is an example:

#include <stdio.h>

int foo () { return 99; };
int main()
{
  int x[4] = { 11, 22, 33, 44 };
  int (*y)[4] = { &x }, i;

  for (i = 0; i < 4; ++i)
    printf("%d %d\n", (*y)[i], x[i]);

  return 0;
}