Answer:
The question seems to be incomplete. Analyzing the full question the answer has been explained below. Please let me know if your answer requirement was other than this.
Explanation:
#include<iostream>
#include<fstream>
using namespace std;
int *extend(int arr[], int N)
{
// create a new array that is twice
//the size of the argument array.
int *new_arr = new int[2 * N];
int i;
// copy the contents of the argument
//array to the new array
for (i = 0; i < N; i++)
new_arr[i] = arr[i];
// initialize the unused elements
//of the second array with 0
for (i = N; i < 2 * N; i++)
new_arr[i] = 0;
// return a pointer to the new array
return new_arr;
}
//main function
int main()
{
// Declare the array
int N;
//Prompt and reads an integer N
cout << "Enter N : ";
cin >> N;
// If the integer read in from
//standard input exceeds 50 or is less than 0
if (N < 0 || N > 50)
// The program terminates silently
exit(0);
// open file in read mode
ifstream in("data.txt");
// create an array of size N
int *arr = new int[N];
int i;
// reads N integers from a file
//named data into an array
for (i = 0; i < N; i++)
{
// read integer from file
in >> arr[i];
}
//then passes the array to your
//array expander function
int *new_arr = extend(arr, N);
// print the extended array
for (i = 0; i < 2 * N; i++)
cout << new_arr[i] << endl;
in.close();
return 0;
}
