A virtual function error

Member

Updated: Oct 26, 2024

Views: 1.4K

i am working in ubuntu
so please help so that it works in ubuntu

/*Write a program having a base class- num. Have this class hold  an integer value  and contain a virtual function shownum(). Create two  derived classes- displayhex and displayoct that inherit class num. Have  the derived classes override  shownum() so that to display  the value in heaxdecimal  and octal respectively.*/


#include<iostream>
 
using namespace std;

class num
{
 protected:
  int i;
 public:
  num(int n)
 {i=n;}

 virtual void shownum()
  {
    cout<<endl<<"the value of i is "<<i;
  }  

};


class hex:public num
{
  public:
  
  hex(int n):num(n)
  {
      }
 
  void shownum()
{
  cout<<endl<<"the value of int i in hex is "<<i;
}

};


int main()
{ int i;
  cout<<endl<<"enter the value of integer u wana to change to hex decimal";
  cin>>i;
  hex h1(i);
  num *h;
  h=&h1;
  h->shownum();

 return 0;
 
  delete h;
}

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Rifaa

Member • Apr 27, 2009

I don't think any one uses ubuntu here dude. I did once just to check it out. Sorry I could not tell u more yet.

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arunhero99

Member • Apr 28, 2009

I got a Red Hat Enterprise Linux. i didn't actually understand what you expect by making it work in ubuntu. Is it working in all other platforms? will making it compile in linux do?

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vivek.m

Member • Apr 28, 2009

Hi,

Please paste the errors you get in ubuntu in the following code

#include <iostream>
using std::cout;
using std::endl;
using std::ios;

class num
{
protected:
    int i;
public:
    num(int n)
    {
        i=n;
    }

    virtual void shownum()
    {
        cout<<"the value of i is "<<i;
    }  
};


class hex:public num
{
public:
    hex(int n):num(n)
    {
    }
    void shownum()
    {
        cout.setf ( ios::hex, ios::basefield );
        cout.setf(ios::uppercase);
        cout<<"the value of int i in hex is 0x"<<i<<endl;
        cout.unsetf(ios::uppercase);
        cout.unsetf(ios::basefield);
    }
};

class oct:public num
{
public:
    oct(int n):num(n)
    {
    }
    void shownum()
    {
        cout.setf ( ios::oct, ios::basefield );
        cout<<"the value of int i in oct is o"<<i<<endl;
        cout.unsetf(ios::basefield);
    }
};

int main()
{ 
    num* objHex = new hex(10);
    num* objOct = new oct(20);

    objHex->shownum();
    objOct->shownum();

    delete objOct;
    delete objHex;
    return 0;
}

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yam.rules

Member • May 14, 2009

oh bahlle so got that working in ur op

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ahammedali

Member • May 14, 2009

sorry man i dont know more about ubuntu
😕

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ahammedali

Member • May 14, 2009

hellow im ahammedali from kerala. im new to crazy engineers.com .so will u plz tell me how to add a query or doubts in this forum? also reply for how to add my photo. plz reply to my e-id <removed by admin>

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