计算a+b，不使用+,-,*,/，用^实现加法，用&实现进位，代码如下，复杂度log级别的，有意思哈~
#include <iostream> #include <string> #include <queue> #include <complex> using namespace std; int go(int a, int b) { int sum = a ^ b; int jin = a & b; if(jin) return go(sum, jin << 1); else return sum; } int main() { int a, b; cin >> a >> b; cout << go(a, b); }转载于:https://www.cnblogs.com/litstrong/archive/2011/05/19/2051516.html
