#include <iostream>

using namespace std;

void main()
{
   int   elementsNum = 0;
   int   arraySize = 15;
   double*  elements = new double[arraySize];
   double  currentProduct = 1;

   do   
   {
    if (elementsNum >= arraySize)
    {
     arraySize += 5;
     double* newArray = new double[arraySize];
     for (int i = 0; i < elementsNum; i++)
     {
      newArray[i] = elements[i];
     }
     delete[] elements;
     elements = newArray;
    }

    cout<<"Insert next element: ";
    cin>>elements[elementsNum];
    elementsNum++;

    currentProduct = currentProduct * elements[elementsNum - 1];
   }   
   while (currentProduct < 100);
    
   delete[] elements;
}