How to write a program to determine the symmetry of a one-dimensional array of k elements?

Question

C++ / C#

That's all I could write, I can not understand further.
How to write that you need to compare the first and last elements in an array? Or is there another way to record such a program?

<
#include <iostream>
#include <math.h>
#include <iomanip>
using namespase std;
int main()
{
    int k,n,a;
    int numbers[a];
    cout<<"Vvedite razmer massiva"<<endl;
    cin>>k;
    if (k=1) 
    {
        cout<<"Vvedite chislo bolshe edenitsi"<<endl;
        return 1;
    }
    else
    if(k%2==0) k=n;
        for (i=0; i<=n;i++)
        {
            cout<<"Vvedite "<<i+1<<"-oe"<<endl;
            cin>>a[i];
        }
}  
 /code>

Answer 1

About the same as the definition of palindromes from this example (see the example at the end). You just need to replace strings with vectors.