#include <iostream>

void swap(int &a, int &b) {
    int temp = a; // Store the value of a in a temporary variable
    a = b;        // Assign the value of b to a
    b = temp;    // Assign the value of temp (original a) to b
}

int main() {
    int x = 5;
    int y = 10;

    std::cout << "Before swap: x = " << x << ", y = " << y << std::endl;
    swap(x, y); // Call the swap function
    std::cout << "After swap: x = " << x << ", y = " << y << std::endl;

    return 0;
}