题解 | #不用加减乘除做加法#

class Solution {
public:
    int Add(int num1, int num2) {
        while(num2!=0){
            int t1,t2;
            t1=num1^num2;
            t2=num1&num2;
            num1=t1;
            num2=t2<<1;
        }
        return num1;
    }
};