Day of the week - beginning-c-plus-plus-programming

#include <iostream>
using namespace std;

void display_day(int day_code) {
    //----WRITE YOUR CODE BELOW THIS LINE----
 
    switch(day_code){
        case 0:
        cout << "Sunday";
        break;
        case 1:
        cout << "Monday";
        break;
        case 2:
        cout << "Tuesday";
        break;
        case 3:
        cout << "Wednesday";
        break;
        case 4:
        cout << "Thursday";
        break;
        case 5:
        cout << "Friday";
        break;
        case 6:
        cout << "Saturday";
        break;
        default:
        cout << "Error - illegal day code";
       
    }
   
   
    //----WRITE YOUR CODE ABOVE THIS LINE----
}