C & C++: What is the difference between pointer-to and address-of array?

C++11 code:

int a[3];
auto b = a;       // b is of type int*
auto c = &a;      // c is of type int(*)[1]

C code:

int a[3];
int *b = a;
int (*c)[3] = &a;

The values of b and c are the same.

What is the difference between b and c? Why are they not the same type?

UPDATE: I changed the array size from 1 to 3.