Private Member function

#include<iostream.h>
class number{
private: int n;
void getNumber()
{
cout<<"Get N";
cin>>n;
}
public:
void putNumber()
{
getNumber();
}
void printNumber()
{
cout<<"N"<<n<<"\n";
}
};
void main()
{
N.getNumber();
N.putNumber();
N.printNumber();
}