How to make two functions with same names in Base class?

Question

This code compiled.

struct A
{
    const int *getX() const
        {
            return &x;
        }

    int *getX()
        {
            const A *thisConst = this;
            return const_cast<int *>(thisConst->getX());
        }


    void f()
        {
            int *p = getX();
        }

    int x;
};

But this code didn't.

struct I
{
    virtual const int *getX() const = 0;

    int *getX()
        {
            const I *thisConst = this;
            return const_cast<int *>(thisConst->getX());
        }
};

struct A : I
{
    virtual const int *getX() const
        {
            return &x;
        }

    void f()
        {
            int *p = getX();
        }

    int x;
};

'const_cast' : cannot convert from 'const int *' to 'int *'

I know that if I will give different names it will be compiled. But are there ways without functions renaming?

Your title doesn't seem to be asking the same thing as your question... could you change one of the two to avoid confusion? Also, what exactly are you trying to achieve here? — Sam Estep
– Sam Estep, Commented Jun 26, 2015 at 0:59

Steephen · Accepted Answer · 2015-06-26 01:06:24Z

1

'const_cast' : cannot convert from 'const A *' to 'int *'

I didn't get this error while trying to compile your program, instead I got

error: invalid conversion from 'const int*' to 'int*' [-fpermissive]

To compile successfully I corrected following line

int *p = getX();

to

const  int *p = getX();

const int * and int* are two different types, you can't assign it directly without cast or modify the type of the variable p.

answered Jun 26, 2015 at 1:06

Steephen

16k7 gold badges46 silver badges47 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Ufx Over a year ago

I made some edits. I know difference between const T * and T *. But I need to be able to get T * because object which I replaced by int in this question calls not const method.

Steephen Over a year ago

@Ufx if you edit do it as additional explanation instead changing the posted question. I don't know what you have edited.

Steephen Over a year ago

See an example for editing question here : stackoverflow.com/questions/31063331/…

Collectives™ on Stack Overflow

How to make two functions with same names in Base class?

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related