C# Get that discount. Why is the Code not working?

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int totalPrice = Convert.ToInt32(Console.ReadLine());

//call the method
Console.Write(Discount(totalPrice));

}
//complete the method declaration
static int Discount(int t)
{
//complete the method body
if (t >= 10000){
t = (int)(t * 0.8f);
return t;
}
}
}
}

Answer 1

put return statement outside if block.

Answer 2

What’s not working about it? Could you be more specific? What happens when you launch the program?