What is difference between array name and pointer to that array?

Answer:

Array name is constant pointer which points to base address of an array. While pointer to that array points to base address of that array.   

First difference:

(a)        Incrementing array name

(b)        void main(){

(c)            int arr[]={1,2,3,4};

(d)            arr++;

(e)            printf("%d",*arr);

(f)        }

(g)        Output:  Compilation error

(h)        (b)Incrementing pointer to array

(i)        void main(){

(j)            int arr[]={1,2,3,4};

(k)            int *ptr=arr;

(l)            ptr++;

(m)            printf("%d",*ptr);

(n)        }

(o)        Output: 2

(p)        Second difference:

(q)        void main(){

(r)            int arr[]={1,2,3,4};

(s)            int *ptr=arr;

(t)            printf("%d   %d",sizeof(arr),sizeof(ptr));

(u)        }

Output: 8  2