Traversal of an array via pointers -- 1-D Arrays -- DSA in C

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#include<stdio.h>
 
// traversing an array using only pointers.
 
int main() {
 
    int arr[] = {1,2,3,4,5,6,7,8,9};
 
    int *ptr1, *ptr2;
 
    ptr1 = arr; // pointing to arr[0], same as ptr1 = &arr[0]
 
    ptr2 = &arr[8]; // pointing to the address of the last element of arr
 
    while(ptr1<=ptr2) {
 
        printf("%d \n", *ptr1); // to access the value, we use *ptr1
        ptr1++; // points to the address of the next element in arr, i.e arr[1], arr[2] and so on until arr[8]
 
    };
 
 
}

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