Question of glass and object

/*

     Question : Define a class Number , which contains the data member num and

          functions ,

              * read the number

              * display the number

              * reverse the number

              * check whether the number is palindrome or not

              * check whether the number is armstrong or not

*/

#include<iostream.h>

#include<conio.h>

class Number

{

     int num;

     public:

          void readNum()

          {

cout<<endl<<"Enter the number :";

              cin>>num;

          }

          void showNum()

          {

cout<<endl<<"Number ="<<num;

          }

          int reverse();

          void palindrome();

          void armstrong();

};

int Number::reverse()

{

     int num2=num;

     int rev=0;

     while(num2!=0)

     {  

          rev=rev*10+num2%10;

          num2=num2/10;

     }

     return rev;

}

void Number::palindrome()

{

     int rev;

     rev=reverse();

     if(rev==num)

          cout<<endl<<"Palindrome";

     else

          cout<<endl<<"Not Palindrome";

}

void Number::armstrong( )

{

     int num2=num;

     int sum=0;

     int a;

     while(num2!=0)

     {

          a=(num2%10);

    

          sum=sum+a*a*a;

          num2=num2/10;

     }

     if(sum==num)

          cout<<endl<<"Armstrong";

     else

          cout<<endl<<"Not Armstrong";

}

void main()

{

     Number ob;

int num;

     ob.readNum();

     ob.showNum();

    num=ob.reverse();

cout<<”Reverse=”<<num;

     ob.palindrome();

     ob.armstrong();

     getch();