#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    // Number the user enters.
    double x;

    // Rounded value.
    double result;

    // Prompt.
    cout << "Enter in a number to round (ENTER 0 TO EXIT): ";
    cin >> x;

    // Process numbers until the user enters in a 0.
    while (x!=0)
    {
        result=floor(x+.5);
        cout << result << endl;

        cout << "Enter in a number to round (ENTER 0 TO EXIT): ";
        cin >> x;
    };

    return 0;
}