Sum of Two Integers计算机如何实现两个数相加

int getSum(int a, int b) {    int sum = a;        while (b != 0)        {            sum = a ^ b;//calculate sum of a and b without thinking the carry             b = (a & b) << 1;//calculate the carry            a = sum;//add sum(without carry) and carry        }                return sum;}

纯模拟，记住就行