#include <iostream>
using namespace std;
class additon {
public:
int a,b;
additon(int x,int y){
   a=x;
    b=y;
}
additon(additon &obj){
    a = obj.a;
    b= obj.b;
  
    // cout<<a+b;

}
void display(){
    cout<<"The addition of a and b is :- "<<a+b<<endl;
}
};

int main() {
    cout << "Hello world!" << endl;
    additon a1(56,77);
    additon a2= a1;
    a1.display();
    a2.display();
    
    return 0;
}