Using array performing arthimatic operation in c++

 /********************************************/

        #include <iostream>
        #include <conio>


          class DS

        {

          private:
            int my_array[2],i,result;
            char opr;

            public:

              void input()

              {
               cout<<"Enter any two number\n";
               for(i=0;i<2;i++)
                cin>>my_array[i];

              }

              /********************/
              void show()
              {
                while(1)
                {

                cout<<"\t\tchoise any operator \n\t\t+\n\t\t-\n\t\t*\n\t\t/\t\t\n\t\tfor clear screen press C\n\t\tif you want to enter number again then press A\n";
                cin>>opr;
                switch(opr)

                {
                    case '+':

                   result=my_array[0]+my_array[1];
                   cout<<"Result=\t\t"<<result<<endl;

                   break;
                    case '-':

                   result=my_array[0]-my_array[1];
                   cout<<"Result=\t\t"<<result<<endl;
                   break;
                    case '*':

                   result=my_array[0]*my_array[1];
                   cout<<"Result=\t\t"<<result<<endl;
                   break;
                    case '/':

                   result=my_array[0]/my_array[1];
                   cout<<"Result=\t\t"<<result<<endl;
                   break;
                   case 'c':
                   case 'C':
                     clrscr();
                     break;

                   case 'A':
                   case 'a':
                     input();
                     break;
                   default:
                    cout<<"Invalid option\n\n";
                    break;
                }


            }
                 }


        };

        void main()

        {
                DS s;
                s.input();
                s.show();

        getch();}