C++ Program to Reverse Number

/*C++ Program to Reverse Number*/

#include<iostream>

using namespace std;

int main()

{

    int n,rem,rev=0;

    cout<<"Enter a number : ";

    cin>>n;

    while(n!=0)

    {

        rem=n%10;

        rev=rev*10+rem;

        n=n/10;

    }

    cout<<"Reverse number is "<<rev;

    return 0;

}

OUTPUT:

Enter a number : 58

Reverse number is 85

/*C++ Program to Reverse Number using Constructor*/

#include<iostream>

using namespace std;

class REV

{

public:

    REV(int n)

    {

        cout<<"Original number is "<<n;

        int rem,rev=0;

        while(n!=0)

            {

                 rem=n%10;

                 rev=rev*10+rem;

                 n=n/10;

            }

        cout<<endl<<"Reverse number is "<<rev;

    }

};

int main()

{

    int n;

    REV x(678);

    return 0;

}

OUTPUT:

Original number is 678

Reverse number is 876