ответьте на вопрос

#include <time.h>
#include <stdlib.h>
#define k 255
main(int)
{
srand((unsigned)time(0));
int A[k],i,j,n=0;
cout<<"Vvedite razmernost' massiva: "<<endl;
cin>>n;
cout<<"\n"<<"Ishodnii massiv: "<<endl;
  for (i=0;i<n;i++)
    {
      A[i]=rand()%9+1;
      cout<<A[i]<<" ";
    }
cout<<"\n"<<"Perevernytii massiv: "<<endl;
j=i;
   do
   {
     j--;
     cout<<A[j]<<" ";
   }
   while (j!=0);
}

#include <iostream>
#include <time.h>
#include <stdlib.h>
#define k 255
main(int)
{
srand((unsigned)time(0));
int A[k],i,j,n=0;
cout<<"Vvedite razmernost' massiva: "<<endl;
cin>>n;
cout<<"\n"<<"Ishodnii massiv: "<<endl;
  for (i=0;i<n;i++)
    {
      A[i]=rand()%9+1;
      cout<<A[i]<<" ";
    }
cout<<"\n"<<"Perevernytii massiv: "<<endl;
j=i;
   do
   {
     j--;
     cout<<A[j]<<" ";
   }
   while (j!=0);
}

for (i = 0;i < n / 2 ; ++i)
    A[i] ^= A[n - i - 1] ^= A[i] ^= A[n - i - 1];