reverse_an_array.cpp

#include <iostream>
#include <vector>
using namespace std;

// Function to reverse the array
void reverseArray(vector<int>& arr) {
    int start = 0, end = arr.size() - 1;
    while (start < end) {
        swap(arr[start], arr[end]);
        start++;
        end--;
    }
}

// Function to print the array
void printArray(const vector<int>& arr) {
    for (int num : arr) {
        cout << num << " ";
    }
    cout << endl;
}

int main() {
    int n;
    cout << "Enter size of array: ";
    cin >> n;

    vector<int> arr(n);
    cout << "Enter " << n << " elements: ";
    for (int i = 0; i < n; i++) {
        cin >> arr[i];
    }

    cout << "Original array: ";
    printArray(arr);

    reverseArray(arr);

    cout << "Reversed array: ";
    printArray(arr);

    return 0;
}