accessing array declared within a class

[pdwivedi]

hi can anybody please expalin me that can i access the array(arr) which is declared as a private member of the class(array) by using public function (display). The code is given here...

#include<iostream.h>
const int  size= 8;
class array
{
int arr[size];
int i;
        public:
array();
void display(int arr[size]);
};

array::array()
{
        i=0;
        arr[0]=21;
        arr[1]=55;
        arr[2]=16;
        arr[3]=11;
        arr[4]=51;
        arr[5]=67;
        arr[6]=5;
        arr[7]=8;
}




//traversal of an array

void array::display(int arr[size])
        {
                for(i=0;i<size;i++)
                        cout<<arr[i]<<"\t";
                cout<<endl;
        }



int main()
{
array ob1;
ob1.display(arr[8]);

return 0;
}

when i try to compile the code it gives the following error:
test.cpp:42: error: arr was not declared in this scope
please help!

thanks in advance

[Salem]

The array is inside the class.

So it would be just
ob1.display();

And declare your member function as taking no parameters.

[pdwivedi]

The array is inside the class.

So it would be just ob1.display();

And declare your member function as taking no parameters.

thanks salem for your quick reply but i have one more doubt as i am a beginner that what if i have diclared more than one array members in the class eg. arr1[3] then how will function know to display which array?
thanks

[Salem]

Well that's up to the code in the display function.

Perhaps
display ( int whichArray );

For example
if it's zero, display arr
if it's one, display arr1

[pdwivedi]

actually i want to write a code that takes array as an argument then sort and display the arrays.I have craeted the function for sorting and displaying but now i am stuck at how to pass the arrays for sorting or displaying.

[Salem]

So why do you have an array in your class, if all you do is pass in an array to work on?

Are you sure that arr and arr1 are not just two instances of your class?