C++ this指针的使用

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

#include <iostream>

#include <cstdio>
using namespace std;
class Complex
{
public:
double real,imag;
void Print()
{
cout<<real<<","<<imag<<endl;
}
Complex(double r,double i):real(r),imag(i){}
Complex Addone()
{
this->real++;
this->Print();
return *this;
}
};
int main()
{
Complex c1(1,1),c2(0,0);
c2=c1.Addone();
return 0;

}

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

#include <iostream>
#include <cstdio>
using namespace std;
class A
{
int i;
public:
void Hello()
{
cout<<"Hello"<<endl;
}


};
int main()
{
A *p;
p->Hello();
}

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