#include <iostream>
using namespace std;
class class1{
    public:
        class1();
        int x;
        int y;
        static int func();
};
int class1::func(){
    return x;
}
int main() {
    class1 c1;
    c1.x=5;
    cout<<c1.func()<<endl;
}

当我尝试编译它时，我得到了一个错误。如何在静态函数中访问x？

终端错误:

In static member function ‘static int class1::func()’:
    error: invalid use of member ‘class1::x’ in static member function
         return x;
                ^
    note: declared here
             int x;
                 ^