Sum of Two Integers

Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.

Example:
Given a = 1 and b = 2, return 3.

class Solution {
public:
    int getSum(int a, int b) {
        int base = 0, result = 0, carry = 0;
        while (base < 32) {
            // get the last bit of a and b, xor with carry
            int tempA = a & 1, tempB = b & 1;
            int current = (tempA ^ tempB ^ carry) << base;
            result |= current;
            carry = (tempA & tempB) || (tempA & carry) || (tempB & carry);
            a >>= 1;
            b >>= 1;
            base++;
        }
        return result;
    }
};