simple c++ calculator program in oop

1. 
2. #include<iostream.h>
3. #include<conio.h>
4. 
   
5. class C
6. {
7. private:
8. int x,y;
9. public:
10. void show(int a,int b)
11. {
12. gotoxy(28,15);
13. cout<<"sum = "<<a+b;
14. gotoxy(28,16);
15. cout<<"sub = "<<a-b;
16. gotoxy(28,17);
17. cout<<"Mult = "<<a*b;
18. gotoxy(28,18);
19. cout<<"div = "<<a/b;
20. gotoxy(28,20);
21. cout<<"total = "<<((a+b)+(a-b)+(a*b)+(a/b));
22. gotoxy(28,21);
23. cout<<"total Average = "<<(((a+b)+(a-b)+(a*b)+(a/b))/2);
24. }
25. 
    
26. void show1(int w,int v)
27. {
28. gotoxy(1,15);
29. cout<<"sum = "<<w+v;
30. gotoxy(1,16);
31. cout<<"suv = "<<w-v;
32. gotoxy(1,17);
33. cout<<"Mult = "<<w*v;
34. gotoxy(1,18);
35. cout<<"div = "<<w/v;
36. gotoxy(1,20);
37. cout<<"total = "<<((w+v)+(w-v)+(w*v)+(w/v));
38. gotoxy(1,21);
39. cout<<"total averwge = "<<(((w+v)+(w-v)+(w*v)+(w/v))/2);
40. 
    
41. 
    
42. }
43. 
    
44. };
45. 
    
46. void main()
47. {
48. C l;
49. l.show(2,3);
50. int j,k;
51. gotoxy(10,1);
52. cout<<"please input 2 numbers for perform = "<<endl;
53. cin>>j>>k;
54. l.show1(j,k);
55. getch();
56. }
57.