public static void Main()
while (result != "ERROR")
Console.WriteLine("Please enter three angles of a triangle");
int ang1 = int.Parse(Console.ReadLine());
int ang2 = int.Parse(Console.ReadLine());
int ang3 = int.Parse(Console.ReadLine());
if (ang1 + ang2 + ang3 == 180)
if (ang1 == ang2 && ang2 == ang3 && isTriangle)
else if ((ang1 == ang2 || ang2 == ang3 || ang1 == ang3) && isTriangle)
Console.WriteLine(result);