What is the best way to add two numbers without using the + operator?

Question

A friend and I are going back and forth with brain-teasers and I have no idea how to solve this one. My assumption is that it\'s possible with some bitwise operators, but n

Answer 1

In python using bitwise operators:

def sum_no_arithmetic_operators(x,y):
    while True:
        carry = x & y
        x = x ^ y
        y = carry << 1
        if y == 0:
            break
    return x