about array and pointer

is a[10] and *a are same to store 10 value

 

it depends; if *a points to an existing array of 10 elements, then yes. If not, then you'd need to dynamically allocate space for the 10 elements.

Code:

int a[10], *ap = a; // ok ap points to an existing array

Code:

int *a = malloc(10 * sizeof(*a)); // allocate space for 10 elements
...
free(a);