What does getting the address of an array variable mean?

Question

Today I read a C snippet which really confused me:

#include 

int
main(void)
{
    int a[] = {0, 1, 2, 3};

    printf(\"%d\\n\", *(*(&a +         


        

Answer 1

Best to prove it to yourself:

$ cat main.c
#include 
main()
{
  int a[4];
  printf("a    %p\n",a);
  printf("&a   %p\n",&a);
  printf("a+1  %p\n",a+1);
  printf("&a+1 %p\n",&a+1);
}

And here are the addresses:

$ ./main
a    0x7fff81a44600 
&a   0x7fff81a44600 
a+1  0x7fff81a44604
&a+1 0x7fff81a44610

The first 2 are the same address. The 3rd is 4 more (which is sizeof(int)). The 4th is 0x10 = 16 more (which is sizeof(a))