Answer:
look up the function in the explanation
Step-by-step explanation:
#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;
int* read_data(int& size);
void print_array(int* array, int size); //used for testing
int main()
{
int* array;
int size;
array = read_data(size);
print_array(array,size);
}
int* read_data(int& size)
{
string input="";
size = 0;
int capacity = 1; //used to store current capacity of array
int* array = new int[1];
cout << "Enter integer, Q to quit : " << endl;
cin >> input;
while(input != "Q")
{
array[size] = atoi(input.c_str());
size++;
//doubling capacity of array
if (size==capacity)
{
//copy elements to temp array
capacity *= 2;
int* temp = new int[size];
for (size_t i = 0; i < size; i++)
{
temp[i] = array[i];
}
//delete old array, allocate new array at new capacity
delete[] array;
array = new int[capacity];
//copy temp array to new array
for (size_t i = 0; i < size; i++)
{
array[i] = temp[i];
}
delete[] temp;
}
cin >> input;
}
int* temp = new int[size];
for (size_t i = 0; i < size; i++)
{
temp[i] = array[i];
}
//if no values are entered return NULL
if (size==0)
return NULL;
//delete old array, allocate new array at new capacity
delete[] array;
array = temp; //make array point to temp array
return array; //return address of array
}
//print values of array for testing
void print_array(int* array, int size)
{
for (size_t i = 0; i < size ; i++)
cout << array[i] << " ";
cout << endl;
}
