类里面的static

#include <iostream>
using namespace std;

class TestClass{
private:
	static int data;
	int none_static_data;
public:
	static void setData(int a_data){
		data = a_data; 
	}
	static int getData(){
		return data;
	}
	void SetData(int a_data){
		data = a_data;
	}
	int GetData(){
		return data;
	}
	static void doSomething(){
		none_static_data = 1; //error, member not exist
		SetData(1); //error, //error, member not exist
	}
};
int main(int argc, char *argv[])
{
	return 0;
}