public static void Main()
Console.WriteLine("Welcome! Give me a number");
num1 = int.Parse(Console.ReadLine());
Console.WriteLine("Give me another number");
num2 = int.Parse(Console.ReadLine());
Console.WriteLine("Give me another number");
num3 = int.Parse(Console.ReadLine());
if (num1==num2 || num1==num3 || num2==num3)
Console.WriteLine("Write other numbers");
else if (num2<num1 && num1<num3 || num3<num1 && num1<num2)
Console.WriteLine("The middle number is: " +num1);
else if (num1<num2 && num2<num3 || num3<num2 && num2<num1)
Console.WriteLine("The middle number is: " +num2);
else if (num1<num3 && num3<num2 || num1<num3 && num3<num2)
Console.WriteLine("The middle number is: " +num3);