confusion abt structure and class

hello sir
sir i want to resolve some confustion with u
abt struct and classes
sir in structure we can explicitly combine data structure and their behaviour and also in class, we can implement a object class which consist data structure and behaviour then diffrence is no left like

#include<iostream.h>
#include<conio.h>
    struct student
   {
   private:
  int id;  
  public:
     void set(int i)
   {
   id=i;
  }
  int get()
  {
  return id;
 }
};
class hello
{
private:
int x;
public:
void set(int i){ x=i ;}
void display(){
cout<<x;
}
};
   void main()
   {
  int c;
  student s1;
hello h1;
  s1.set(6);
h1.set(9);
h1.dispaly();
  c=s1.get();
  cout<<c;
  getch();
}

[Valmont]

In C++ both a struct and a class have the same memory model. So the only difference is their default access specifiers (public for struct, private for class).