This test case is hidden (newbie!!!!!!!)

Question

im learning c#. Arrays
how to open hidden test ?
i just want to know that what is requested in this test .........................................
heres questions;
A game machine has 5 games installed on it:

string[] games = { "Alien Shooter", "Tic Tac Toe", "Snake", "Puzzle", "Football" };
C#
Write a program to take N number as input and output the corresponding game with N index from the array.

If user enters an invalid number that is out of array range, the program should output "Invalid number".

and heres my code ;
static void Main(string[] args)
{
string[] games = { "Alien Shooter", "Tic Tac Toe", "Snake", "Puzzle", "Football" };

int n = Convert.ToInt32(Console.ReadLine());
if (n<0 || n>5)
{
Console.WriteLine("Invalid number");

}
else
{
Console.WriteLine(games[n]);

}
}
and heres result ;
Test Case 1 solved
Input
0
Your Output; Alien Shooter
Expected Output ; Alien Shooter

Test Case 2 solved
Input
4
Your Output ;nnFootball
Expected Output ;nnFootball

Test Case 3 solved
Input ; 7
Your Output ; Invalid number
Expected Output ; Invalid number

and there are two more hidden case didnt solved

what should i do ???

class ; c# intermediate - Arrays and Strings - Arrays

Answer 1

The condition for the "Invalid number" branch needs correction. <games> array only has 5 elements with valid indices ranging from 0 ~ 4.

if( n < 0 || n > 4 )
// rest of the code ...

Answer 2

The user still can give a float number as an input (for example "3.4"). So your code would still pass it to the else section, since 3.4 is larger than 0 and smaller than 5. You need to get only integers as input from the user - I think that is the flaw.