80分求调

#include <bits/stdc++.h>

using namespace std;

int main()
{
    double p;
    int q,a,b,c,d;
    cin >> p;
    q = int (p*10);
    a = q / 1000;
    b = q / 1000 % 10;
    c = q / 10 % 10;
    d = q % 10;
    cout << d << "." << c << b << a << endl;

    return 0;
}