Class_Point.cpp

#include <iostream>
#include <stdio.h>
 
class L
{
private:
    int a1=1;
public:
    L():a1(2), a2(a1)  //Don't use like this, a2 result depends on compiler
    {}
    ~L()
    { }
    int a2=1;
    void foo1()
    {
      printf("fun1");
    }
};
 
int main(int argc, const char * argv[])
{
    L *l1 = NULL;
    l1->foo1();
    return 0;
}