the size of a char pointer in a 32-bit processor is 4 bytes,
while the size of a char pointer in a 64-bit processor is 8 bytes. 

1) no matter char variable, int, float all size are same 0x0A etc.
the size of the character pointer is 8 bytes.

Note: This code is executed on a 64-bit processor.

2) Array 

Since each element of the array is stored in a particular memory location,
there must be a pointer storing the address of these elements. 

As an array is a contiguous memory block,
the elements in an array are also present in adjacent memory locations,
that is, 

in 2000, 2001 (=2000+1), 2002 (=2000+2), 2003 (=2000+3), 2004 (=2000+4). 

3) Size of a Pointer to an Array 

The size of a pointer to an array is 8 bytes
as *p=arr;

5) To find the number of elements in an array:

sizeof(arr)/sizeof(arr[0]));