c++操作符重载

//操作符重载class opTest{private:    int num;public:    opTest(int n)    {        num = n;    }    int operator&(opTest& o)//重载&符号    {        cout << "operatio & " << o.num+num << endl;        return o.num = num;    }};//c++的类定义后需要有分号！int main(){    opTest ca(1);//实例化的语句真奇怪    opTest cb(9);    ca&cb;}

最后将会如期地输出

"operatio & 10“