//使用静态成员函数访问非静态数据成员 #include
class sample { public: sample (int i,int j); static void addnumber(sample z); private: int s; static int sum; }; sample::sample(int i,int j) { s=i+j; sum+=s; } void sample::addnumber(sample z) { cout<<"s="<
<<" "; cout<<"sum="<
<<" "; } int sample::sum=100; void main() { sample x(1,2),y(3,4); x.addnumber(y); } 运行结果是: 1. s=3 sum=110 2. s=7 sum=110 选填1或2( )