【单选题】有如下程序: #include using namespace std; class A{ public: static int a; void init(){a=1;} A(int a=2) {init(); a++; } }; int A::a=0; A obj; int main() { cout<
【简答题】I remember my maths teacher Mr Young very well. He stood out because the kids made fun of him. He was missing one of his fingers. In school Maths was my worst subject. I don’t think there was ever a d...