How to make a virtual function in c++?
Please provide line of code.
Thanks in advance.
How to make a virtual function in C Plus Plus?
Ask by Hank Greenberg
Updated 14 Jun 2013
class base{
public:
int i;
base(int x){ i=x; }
virtual void func()
{
cout<<"Using bse version of func(): ";
cout<< i<<'\n';
}
};
class derived1:public base{
public:
void func()
{
cout<<"Using derived1's version of func(): ";
cout<<i*i<<'\n';
}
};
class derived2:public base{
public:
derived2(int x):base(x){}
void func()
{
cout<<"Using derived2's version of func(): ";
cout<<i+i<<'\n';
}
};
int main()
{
base *p;
base ob(10);
derived1 d_ob1(10);
derived2 d_ob2(10);
p=&ob;
p->func();
p=&d_ob1;
p->func();
p=&d_ob2;
p->func();
return 0;
}