swap values in array c++

#include <iostream>
using namespace std;

void swap(int &x, int &y) {
    int temp = x;
    x = y;
    y = temp;
}

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    swap(arr[0], arr[4]);
    for (int i = 0; i < 5; i++) {
        cout << arr[i] << " ";
    }
    return 0;
}

Explanation of the Code

• The code includes the necessary header file for input-output operations and defines the standard namespace.
• A function named swap is declared to swap the values of two integers using reference parameters.
• Inside the swap function, a temporary variable temp is used to hold the value of the first integer.
• The value of the first integer x is then assigned the value of the second integer y.
• Finally, the value of the second integer y is assigned the value of the temporary variable temp.
• In the main function, an integer array arr is declared and initialized with values {1, 2, 3, 4, 5}.
• The swap function is called to swap the values at index 0 and index 4 of the array arr.
• A loop is used to print the elements of the array arr after the swap operation.
• The output will be: 5 2 3 4 1