Add two integers using only bitwise operators?

Question

In C#, is it possible to perform a sum of two 32-bit integers without using things like if..else, loops etc?

That is, can it be done using only the bitwise operation

Answer 1

Try this:

    private int add(int a, int b) {
        if(b == 0)
            return a;

        return add( a ^ b, (a & b) << 1);
    }

Edit: Corrected if statement