Help in Virtual function

Janakiraman · #1 22-May-2006, 23:52

Hi All,

I am familiar with virtual functions but i am not able to identify under which circumstances virtual functions should be used.

So does anybody provide a two type of source code, one without using virtual functions and another with using virtual functions of same functionalaties?

This will help to understand under which circumstances virtual functions can be applied.

Best Regards,
Janakiraman

aie0 · #2 31-May-2006, 00:15

CPP / C++ / C Code:

class base
{
virtual void do() { out<<"1";}
};

class derive: public base
{
virtual void do() { out<<"2"; }
};

void main()
{
base* obj = new derive();
obj->do();
}

-----------
output: 2

Without using virtual function the output will be 1

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Help in Virtual function

Re: Help in Virtual function