In C Programming Language, the only operations that can be carried out on pointers are summarized below:

1. A pointer variable can be assigned the address of an ordinary variable (e.g., pv = &v)
2. A pointer variable can be assigned the value of another pointer variable (e.g., pv = px) provided both the pointers point to objects of the same data-type
3. A pointer variable can be assigned a null (zero) value (e.g., pv =NULL, where NULL is a symbolic constant that represents the value 0)
4. An integer quantity can be added to or subtracted from a pointer variable (e.g., pv + 3, ++pv, etc.)
5. One pointer variable can be subtracted from another pointer variable provided both pointers point to elements of the same data-type
6. Two pointer variables can be compared provided both the pointers point to objects of the same data-type