Create a class to process internet addresses xx.yy.zz.mm from a data file and identify machines in the same locality (xx.yy) by their nickname

Question

What will be an ideal response?

Answer 1

```
class InternetAddress {
public:
InternetAddress () {}
InternetAddress (int, int, int, int, const string&);
string getnickname() const; // accessor
bool sameNetwork (const InternetAddress&); // test if same network

private:
int xx, yy, zz, mm; // internet address conponents
string nickname;

friend istream& operator>> (istream&, InternetAddress&);
friend ostream& operator<< (ostream&, const InternetAddress&);
};

int main()
{
string infilename;
int size, actsize;
InternetAddress* addresses; // array of addresses
char badChar; // input error check character
int i; // loop control

cout << endl << "Enter name of internet address data file => ";
cin >> infilename;
ifstream infile (infilename.c_str(), ios::in);

infile >> size;
addresses = new InternetAddress [size]; // dynamically allocate array

for (i = 0; (i < size && !infile.fail()); ++i)
infile >> addresses[i];

if (infile.eof()){
cout << endl << "Unexpected end of data file!" << endl;
actsize = i - 1;
cout << "Only using first " << actsize << " addresses."
<< endl << endl;
} else if (infile.fail()){
infile.clear();
infile >> badChar;
cout << endl << "Error in data file at => " << badChar
<< " <<<" << endl;
actsize = i - 1;
cout << "Only using first " << actsize << " addresses."
<< endl << endl;
} else {
actsize = size;
cout << endl<< "Data read " << actsize
<< " addresses successfully!" << endl << endl;
}

for (i = 0; i < (actsize - 1); ++i)
for (int j = i + 1; j < actsize; ++j)
if (addresses[i].sameNetwork(addresses[j]))
cout << "Machines "
<< addresses[i].getnickname()
<< " and "
<< addresses[j].getnickname()
<< " are on the same local network."
<< endl;
cout << endl << "Machines tested:" << endl;
for (i = 0; i < actsize; ++i)
cout << addresses[i] << endl;

cout << endl;

delete[] addresses; // return memory to heap

return 0;
}

```