#include <iostream>
using namespace std;
  class myclass
  {
    int n1, n2;
  public:
    // default constructor
    myclass(){}
    // main constructor
    myclass(int x, int y){n1=x;n2=y;}
    // notice the declaration
    myclass operator +(myclass);
    myclass operator-(myclass);
    void show(){cout<<"\t col 1 :"<< n1<<endl << "\t col 2: " <<n2;}
  };
  // returns data of type myclass
  myclass myclass::operator +(myclass myObj)
  {
    myclass buffer;
    //creating + replicas 
    buffer.n1=n1 + myObj.n1;
    buffer.n2=n2 + myObj.n2;
    return buffer;
  }
  myclass myclass::operator -(myclass myObj)
   {
     myclass buffer;
     // createing - replicas
     // passed to it and store in buffer
     buffer.n1=n1- myObj.n1;
     buffer.n2=n2 - myObj.n2;
     return buffer;
   }
 int main()
  {
    cout<< " myclass operator +(myclass "; 
    cout <<" \n myclass operator-(myclass)\n";
	myclass ob1(10,90);   myclass ob2(90,10);
    myclass obx(0,0); 
    myclass ob3(190,90);  myclass ob4(90,10);
    obx.show();
    cout<<"\n operation + "<<endl;
    ob1=ob1+ob2;
    ob1.show();
    cout<<"\n operation - "<<endl;
    obx= ob3 - ob4;
    obx.show();
    return 0;
  }