User defined Exception - Division

#include <iostream>

#include <exception>

using namespace std;

class Divide_By_Zero_Exception : public exception

{

  public:

  const char * what() const throw() {

    return "Divide By Zero Exception";}

};

int main()

{

  

  try

  {

    int a, b;

    cin>>a>>b;

    if(b==0)

    {

      Divide_By_Zero_Exception d;

      throw d;

    }

    else

    {

      cout<<a/b;

    }

  }

  catch(exception& e)

  {

    cout<<e.what();

  }

  return 0;

}