靜態成員函數，靜態數據成員

#include<iostream>
using namespace std;
class T
{
public:
	T(int x){a=x,b+=x;}
	static void display(T c)
	{cout<<c.a<<","<<c.b<<endl;}
private:
	int a;
	static int b;//聲明

};
int T::b=5;//定義
int main()
{
  T A(3);
  T::display(A);
  T B(5);
  T::display(B);

}

 

int main()
{
  T A(3),T B(5);
  T::display(A);
  T::display(B);

}