#include <iostream>
#include <string>
using namespace std;

string WeekDay(int day)
// precondition: 0 <= day <= 6
// postcondition: return "Sunday" for 0,
//                     	"Monday" for 1, 
//			…  	"Saturday" for 6
{
  if (0 == day) return "Sunday";
  else if (1 == day) return "Monday";
  else if (2 == day) return "Tuesday";
  else if (3 == day) return "Wednesday";
  else if (4 == day) return "Thursday";
  else if (5 == day) return "Friday";
  else if (6 == day) return "Saturday";
}

int main()
{
    cout << WeekDay(5) << endl;

    //int j = WeekDay(0);

    cout << WeekDay(2.1) << endl;

    string s = WeekDay(22);

    WeekDay(3);

    return 0;
}