1.cpp

// Iterative C++ program to reverse an array
#include <bits/stdc++.h>
using namespace std;

/* Function to reverse arr[] from start to end*/
void rvereseArray(int arr[], int start, int end)
{
    while (start < end)
    {
        int temp = arr[start];
        arr[start] = arr[end];
        arr[end] = temp;
        start++;
        end--;
    }
}    

/* Utility function to print an array */
void printArray(int arr[], int size)
{
for (int i = 0; i < size; i++)
cout << arr[i] << " ";

cout << endl;
}

/* Driver function to test above functions */
int main()
{
    int n;
    cin>>n;
    int arr[n];
    {
        for (int i = 0; i < n; i++)
        cin >> arr[i] ;
    }


    rvereseArray(arr,0,n-1);
    printArray(arr,n);
}