Question

how to assign the address of a variable to other variable in pointer.​

Answer 1

to aise the memory address of the variable the operator & is used which is called as address operator we can assign the address of a variable to another variable PTR using & operator as

ptr = &a

this statement will assign the address to variable PTR variable is a pointer to variable.

Answer 2

Explanation:

In electronics, a subtractor can be designed using the same approach as that of an adder