静态变量的练习

#include<iostream>
#include<string>
using namespace std;
class person
{
public:
static int A;
private:
static int B;
int c;
public:
void show()
{
cout<<A<<endl;
}
static void func()
{
cout<<"func的hanshu"<<endl;
A=100;
B=10;
cout<<A<<B<<endl;
}
};
int person::A=10;
int person::B=20;
void test()
{
person p1;
p1.show();
}
int main()
{
test();
person p2;
p2.A=100;
cout<<p2.A<<endl;
p2.func();
}