The document outlines a C++ program that implements a custom array class with operations such as addition, subtraction, multiplication, and division. It includes methods for element access and assignment, as well as boundary condition checks. The main function creates and manipulates multiple array instances while demonstrating these operations with output to the terminal.

1. check the modifed code now you will get all operations done.
terminal will display add, subtract, multiply and div operation and dounday condition too.
#include
using namespace std;
class Array
{
private:
int start;
int end;
int *array;
public:
Array(int n);
Array(int n, int m);
int &operator[](int index);
Array &operator=(Array a);
bool operator==(Array &a);
bool operator!=(Array &a);
friend ostream &operator<<(ostream &out, Array &a);
friend Array &operator+(Array &a, Array&b);
friend Array &operator-(Array &a, Array&b);
friend Array &operator*(Array &a, Array&b);
friend Array &operator/(Array &a, Array&b);
};
Array::Array(int n)
{
start = 0;
end = n-1;
array = new int[n];
for (int i = 0; i < n; i++)
array[i] = i+1;
}
Array::Array(int n, int m)
{
start = n;
end = m-1;

2. array = new int[m-n];
for (int i = 0; i < m-n; i++)
array[i] = start + i;
}
int &Array::operator[](int index)
{
if (index >= start && index <= end)
{
return (array[index-start]);
}
cout << "Error: Index out of bounds." << endl;
int temp = 0;
return temp;
//return *array;
}
Array &Array::operator=(Array a)
{
start = a.start;
end = a.end;
for(int i = 0; i < end - start; ++i)
{
array[i] = a.array[i];
}
return *this;
}
bool Array::operator==(Array &a)
{
for(int i = 0; i < end - start; ++i)
{
if(array[i] != a.array[i])
return false;
}
return true;
}
bool Array::operator!=(Array &a){
return *this == a;

3. }
ostream &operator<<(ostream &out, Array &b)
{
for(int i = 0; i < b.end - b.start; ++i)
{
out << "(" << i + b.start << ")" << b.array[i] << " ";
}
return out;
}
Array &operator+(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
arr.array[i] = a.array[i] + b.array[i];
}
return arr;
}
Array &operator-(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
arr.array[i] = a.array[i] - b.array[i];
}
return arr;
}
Array &operator*(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
arr.array[i] = a.array[i] * b.array[i];
}

4. return arr;
}
Array &operator/(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
if (a.array[i]!=0)
arr.array[i] = b.array[i] / a.array[i];
}
return arr;
}
int main()
{
Array test(10);
Array Ary1(10,25);
Array Ary2(-5,10);
Array Ary3(15,30);
int i;
int j;
for (i = 0; i < 10; i++)
test[i] = i+1;
cout << "Test array output" << endl;
for (i = 0; i < 10; i++)
cout << test[i] << " ";
cout << endl;
i = -5;
while (i < 10)
{
Ary2[i] = i*2;

5. i++;
}
cout << " ";
cout << "Ary2 array otuput" << endl;
for (i = -5; i < 10; i++)
cout << Ary2[i] << " ";
cout << endl;
i = 10; j = -5;
while ( i < 25 )
{ Ary1[ i ] = i*100;
Ary2[j] = j * 200;
i++; j++;
};
cout << "Ary1 array output" << endl;
cout << Ary1 << endl;
cout << endl;
cout << " ";
cout << "Ary2 array output" << endl;
cout << Ary2 << endl;
cout << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] + Ary2[i+-5];
cout << "Ary3 array Addition output" << endl;
cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] - Ary2[i+-5];
cout << "Ary3 array Subtraction output" << endl;

6. cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] * Ary2[i+-5];
cout << "Ary3 array Multiply output" << endl;
cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary2[i+-5]/Ary1[i+10];
cout << "Ary3 array Division output" << endl;
cout << Ary3 << endl;
cout << " ";
cout << "Test boundary conditions" << endl;
Ary1[8] = 100;
Ary1[16] = 200;
i = 100;
cout << Ary1[i] << endl;
return 0;
}
Solution
check the modifed code now you will get all operations done.
terminal will display add, subtract, multiply and div operation and dounday condition too.
#include
using namespace std;
class Array
{
private:
int start;
int end;
int *array;
public:
Array(int n);

7. Array(int n, int m);
int &operator[](int index);
Array &operator=(Array a);
bool operator==(Array &a);
bool operator!=(Array &a);
friend ostream &operator<<(ostream &out, Array &a);
friend Array &operator+(Array &a, Array&b);
friend Array &operator-(Array &a, Array&b);
friend Array &operator*(Array &a, Array&b);
friend Array &operator/(Array &a, Array&b);
};
Array::Array(int n)
{
start = 0;
end = n-1;
array = new int[n];
for (int i = 0; i < n; i++)
array[i] = i+1;
}
Array::Array(int n, int m)
{
start = n;
end = m-1;
array = new int[m-n];
for (int i = 0; i < m-n; i++)
array[i] = start + i;
}
int &Array::operator[](int index)
{
if (index >= start && index <= end)
{
return (array[index-start]);
}
cout << "Error: Index out of bounds." << endl;
int temp = 0;
return temp;

8. //return *array;
}
Array &Array::operator=(Array a)
{
start = a.start;
end = a.end;
for(int i = 0; i < end - start; ++i)
{
array[i] = a.array[i];
}
return *this;
}
bool Array::operator==(Array &a)
{
for(int i = 0; i < end - start; ++i)
{
if(array[i] != a.array[i])
return false;
}
return true;
}
bool Array::operator!=(Array &a){
return *this == a;
}
ostream &operator<<(ostream &out, Array &b)
{
for(int i = 0; i < b.end - b.start; ++i)
{
out << "(" << i + b.start << ")" << b.array[i] << " ";
}
return out;
}
Array &operator+(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)

9. {
arr.array[i] = a.array[i] + b.array[i];
}
return arr;
}
Array &operator-(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
arr.array[i] = a.array[i] - b.array[i];
}
return arr;
}
Array &operator*(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
arr.array[i] = a.array[i] * b.array[i];
}
return arr;
}
Array &operator/(Array &a, Array&b)
{
Array arr(a.end - a.start);
for(int i = 0; i < a.end - a.start; ++i)
{
if (a.array[i]!=0)
arr.array[i] = b.array[i] / a.array[i];
}
return arr;
}

10. int main()
{
Array test(10);
Array Ary1(10,25);
Array Ary2(-5,10);
Array Ary3(15,30);
int i;
int j;
for (i = 0; i < 10; i++)
test[i] = i+1;
cout << "Test array output" << endl;
for (i = 0; i < 10; i++)
cout << test[i] << " ";
cout << endl;
i = -5;
while (i < 10)
{
Ary2[i] = i*2;
i++;
}
cout << " ";
cout << "Ary2 array otuput" << endl;
for (i = -5; i < 10; i++)
cout << Ary2[i] << " ";
cout << endl;
i = 10; j = -5;
while ( i < 25 )
{ Ary1[ i ] = i*100;

11. Ary2[j] = j * 200;
i++; j++;
};
cout << "Ary1 array output" << endl;
cout << Ary1 << endl;
cout << endl;
cout << " ";
cout << "Ary2 array output" << endl;
cout << Ary2 << endl;
cout << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] + Ary2[i+-5];
cout << "Ary3 array Addition output" << endl;
cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] - Ary2[i+-5];
cout << "Ary3 array Subtraction output" << endl;
cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary1[i+10] * Ary2[i+-5];
cout << "Ary3 array Multiply output" << endl;
cout << Ary3 << endl;
cout << " ";
for (i=0;i<14;i++)
Ary3[i+15] = Ary2[i+-5]/Ary1[i+10];
cout << "Ary3 array Division output" << endl;
cout << Ary3 << endl;
cout << " ";

12. cout << "Test boundary conditions" << endl;
Ary1[8] = 100;
Ary1[16] = 200;
i = 100;
cout << Ary1[i] << endl;
return 0;
}