reverse-an-arrya.cpp

#include <iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int arr[n];
    for(int i=0;i<n;i++){
        cin>>arr[i];
    }
    int l=0;
    int r=n-1;
    while(l<=r){
        int temp=arr[r];
        arr[r]=arr[l];
        arr[l]=temp;
        l++;
        r--;
    }
    for(int i=0;i<n;i++){
        cout<<arr[i]<<" ";
    }
    return 0;
}