類的靜态函數 靜态成員（類的靜态成員 屬于 類）

#include <iostream>      

using namespace std;      

class school      

{public:      

school(string t,string l)      

{tower=t;lake=l;}      

static string &getLib()//私有東西傳回      

{return lib;}      

void dis()      

{cout<<"ta:"<<tower<<"hu:"<<lake<<"  tushuguan:"<<lib<<endl;}      

private:      

string tower;      

string lake;      

static string lib;      

};      

string school::lib="";      

int main()      

{      

school   pk("boyata    ","weMeiHu ");      

school   bs("dianshiTa ","daminghu");      

school  xdf("leifengta ","xihu    ");      

//==============      

//        pk.lib  +="aaa ";//我感覺不屬于 類對象      

//          pk.dis();      

//         bs.lib  +="bbb ";      

//          bs.dis();      

//         xdf.lib +="ccc ";      

//          xdf.dis();      

//==============      

school::getLib()+="aaa ";//類的靜态成員屬于類      

pk.dis();      

school::getLib()+="bbb ";      

bs.dis();      

school::getLib()+="ccc ";      

xdf.dis();      

cout << "Hello World!" << endl;      

return 0;      

}