#include <iostream>
using namespace std;


void swap(double* a, double* b) {
    double temp = *a;
    *a = *b;
    *b = temp;
}


void sort2(double* p, double* q) {
    if (*p > *q) {
        swap(p, q);
    }
}

int main() {
    double x = 10.5;
    double y = 5.5;

    cout << "Before sorting: x = " << x << ", y = " << y << endl;


    sort2(&x, &y);

    cout << "After sorting: x = " << x << ", y = " << y << endl;

    return 0;
}