【c++程序】静态函数

#include<iostream>
#include<string>
using namespace std;
class Sd
{
public:
	string name;
	static string teacher;
	static int room;
	Sd(const string & n):name(n){}
	void show(){cout<<"我是"<<name<<"在"<<room<<"听"<<teacher<<"老师讲课"<<endl;}
	static void newTeacher(const string &t){teacher=t;}
};
string Sd::teacher="陈";
int Sd::room=300;
int main()
{
	Sd s1("伯乐");
	Sd s2("哈哈");
	Sd s3("陈伟");
	s1.show();
	s2.show();
	s3.show();
	Sd::newTeacher("赵");//没有当前对象，没有this指针。
	s1.show();
	s2.show();
	s3.show();
}