类A定义如下，则在横线处补充（ ）可以完成拷贝aa到a（ ） Class A{ Char*a; Public: A():a(0){} A(char*aa) { a=_________; Strcpy(a,aa); ~A(){delete a;} };

下面程序执行输出结果为（ ） #include int fun(int i) { int cnt = 0; while(i) { cnt++; i = i&(i-1); } return cnt; } int main() { printf( "%d\n", fun(2017) ); return 0; }

下列程序的运行结果是（ ） #include #include using namespace std; class Point {public: Point(int X=0, int Y=0); Point(Point &p); int GetX() {return X;} int GetY() {return Y;} static int countP; static void GetC(Point A,Point B) {int z; z=sqrt((B.X-A.X)*(B.X-A.X)+(B.Y-A.Y)*(B.Y-A.Y)); cout<X=X;this->Y=Y; countP++;} Point::Point(Point &p) { X=p.X; Y=p.Y; countP++;} int Point::countP=0; int main() { Point D(3,4),*p; Point E(D); p=&E; void (*q)(Point,Point)=Point::GetC; (*q)(D,E); return 0; }