#include <iostream>
#include <string.h>

using namespace std;



int* foo (int array1[],int size1,int array2[],int size2, int *newarrsize)
{
    int i=0;
    int* newarr = new int[size1+size2];
    for (i=0; i<size1; i++)
    {
        *(newarr+i) = array1[i];
    }
    for (i=0; i<size2; i++)
    {
        *(newarr+size1+i) = array2[i];
    }

    *newarrsize = sizeof(newarr) / 4;
    return newarr;
}

    void main()
{
    int array1[] ={1,2,3,4,5};
    int array2[] ={6,7,8,9,10};
    int newarrsize = 0;

    int size1 = sizeof(array1) / sizeof(array1[0]);
    int size2 = sizeof(array2) / sizeof(array2[0]);
    int *new_address;
    new_address = foo(array1,size1,array2,size2, &newarrsize);

    for (int i=0; i < size1+size2; i++)
        cout << *(new_address+i);
}