Question

How to compile this code on Visual Studio?

Because it keeps getting me an error when i compile it.

#include<iostream.h>
#include<cio.h>
class Array
{
public:

Array(int=0)//initalise the array with 0 value

Array(const Array &);
~Array();
private:
int size;
int *arr;
bool setvalue(int index,int value);
bool getvalue(int index,int &value);

Array & increment();
int getsize();
void print();
Array &Add(const Array arr);
bool Equal(const Array *arr)const;
Array &removeAt(int index);
Array &insertAt(int index,int value);

}; //End of Array class

void Array::setvalue(int index,int value) //set value for array
{
i=index;
x=value;
}
void Array::getvalue(int index,int value) //get array element
{
i=index;
x=&value;
}

void Array::getsize() //return the size of the array
{
cout<<arr.size();

}

void Array::print() //display array element
  
{
cout << x<endl;   
}
void Array::Add(int arr[])
{

int i;
for (i = 0; i < 5; i++)
arr[i]++; // this alters values in array in main()

}

void main()

{

Array A;
int arr[5];
  

cout << "Please Enter " << A.getSize() << " elements for A1 :";

int x;

for (int i = 0; i < A.getSize(); i++)

{

cin >> x;

A.setValue(i, x);

}

Array B(5);

cout << "Please Enter " << B.getSize() << " elements for B : ";

for (int i = 0; i < B.getSize(); i++)

{

cin >> x;

B.setValue(i, x);

}

cout << "Testing copy constrcutor : Array X(A); D = ";

Array X(A);

X.print();

cout << endl;

cout << "I am printing A using getValue assuming that I don't know the size,\nA = ";

int i = 0;

while (A.getValue(i, x))

{

cout << x << " ";

i++;

}

cout << "\nArray C = A.increment(), printing (using A.print()) A and C after the function call\nA = ";

Array C = A.increment();

A.print();

cout << "\nC = ";

C.print();

cout << "\nA.Equal(C) = " << A.Equal(&C) << endl;

cout << "A.Equal(B) = " << A.Equal(&B) << endl;

cout << "Array D = A.Add(B) = ";

Array D = A.Add(B);

D.print();

cout << "\nA is ";

A.print();

cout << "\nB is ";

B.print();

cout << endl;

cout << "Inserting 99 at index 99999 in A, the result is :\n";

A.insertAt(99999, 99);

A.print();

cout << endl;

cout << "Inserting -99 at index -99999 in A, the result is :\n";

A.insertAt(-99999, -99);

A.print();

cout << endl;

cout << "Inserting 7 at index 3 in A, the result is :\n";

A.insertAt(3, 7);

A.print();

cout << endl;

cout << "Deleting the element at index 2 from A, the result is :\n";

A.removeAt(2);

A.print();

cout << endl;
getch();
}

Answer 1

#include<iostream.h>

#include<conio.h>

class Array

  {

    public:

Array(int=0)              //initalise the array with 0 value

    Array(const Array &);

    ~Array();

    private:

    int size;

    int *arr;

    bool setvalue(int index,int value);

    bool getvalue(int index,int &value);

    Array & increment();

    int getsize();

    void print();

    Array &Add(const Array arr);

    bool Equal(const Array *arr)const;

    Array &removeAt(int index);

    Array &insertAt(int index,int value);

    }; //End of Array class

    void Array::setvalue(int index,int value)               //set value for array

      {

            i=index;

            x=value;

      }

    void Array::getvalue(int index,int value)                //get array element

      {

            i=index;

            x=&value;

      }

    void Array::getsize() //return the size of the array

      {

        cout<<arr.size();

      }

    void Array::print() //display array element

      {

         cout << x << endl;   

      }

    void Array::Add(int arr[])

      {

        int i;

        for (i = 0; i < 5; i++)

           arr[i]++;                                       // this alters values in array in main()

      }

    void main()

    {

        Array A;

        int arr[5];

        cout << "Please Enter " << A.getSize() << " elements for A1 :";

        int x;

        for (int i = 0; i < A.getSize(); i++)

           {

            cin >> x;

            A.setValue(i, x);

           }

        Array B(5);

        cout << "Please Enter " << B.getSize() << " elements for B : ";

    

        for (int i = 0; i < B.getSize(); i++)

             {

                cin >> x;

                B.setValue(i, x);

             }

    

        cout << "Testing copy constrcutor : Array X(A);

        D = " ";

    

        Array X(A);

        X.print();

        cout << endl;

        cout << "I am printing A using getValue assuming that I don't know the size,\nA = ";

        int i = 0;

    

         while (A.getValue(i, x))

          {

            cout << x << " ";

            i++;

          }

        cout << "\nArray C = A.increment(), printing (using A.print()) A and C after the function call\nA = ";

        Array C = A.increment();

        A.print();

        cout << "\nC = ";

        C.print();

        cout << "\nA.Equal(C) = " << A.Equal(&C) << endl;

        cout << "A.Equal(B) = " << A.Equal(&B) << endl;

        cout << "Array D = A.Add(B) = ";

        Array D = A.Add(B);

        D.print();

        cout << "\nA is ";

        A.print();

        cout << "\nB is ";

        B.print();

        cout << endl;

    

        cout << "Inserting 99 at index 99999 in A, the result is :\n";

        A.insertAt(99999, 99);

        A.print();

        cout << endl;

        cout << "Inserting -99 at index -99999 in A, the result is :\n";

        A.insertAt(-99999, -99);

        A.print();

        cout << endl;

        cout << "Inserting 7 at index 3 in A, the result is :\n";

        A.insertAt(3, 7);

        A.print();

        cout << endl;

        cout << "Deleting the element at index 2 from A, the result is :\n";

        A.removeAt(2);

        A.print();

        cout << endl;

     getch();

    }

}