main.cpp

#include <iostream>
using namespace std;
int main()
{
    int capacity = 5;
    int* number  = new int[capacity];
    int entries  = 0;
    while(true) {
        cout << "Numbers: ";
        cin >> number[entries];

        if(cin.fail()) break;
        entries++;

        if(entries == capacity) {
            // crear una variable temporal para incremenentar la memoria asignada
            capacity *= 2;
            int* temp = new int[capacity];

            // copiar los elementos de temp al arreglo de number
            for(int i= 0; i < entries; i++) {
                temp[i] = number[i];
            }
            delete[] number;
            number = temp;
        }
        if( entries > capacity) {
            cout << "Warning: Exceeded capacity!" << endl;
        };


    }

    for(int i = 0; i < entries; i++) {
        cout << number[i] << ",";
    }

    return 0;
}