有关static和作用域的一个小问题，看代码

#include <iostream>using std::cin;using std::cout;using std::endl;class CAount{private:double m_money;public:void SaveMoney(double x);};void CAount::SaveMoney(double x){m_money=x;static int flag=0;flag++;if(flag==2){cout<<"都调用第二次了,退了吧"<<endl;system("pause");exit(0);}}int main(){CAount test;int x;cin>>x;test.SaveMoney(x);test.SaveMoney(x);return 0;}