//ronald nguyen

using System; 

​

   namespace Program

    {

     public class MainClass

      {

​

        public static void Main(string[] args)

        {

            MainClass Angles = new MainClass(); //call from Main

            Angles.Triangle();

        }

         public void Triangle() //void function because I dont want to return value

         {

             int angle1, angle2, angle3; //assign variables

            Console.Write("Enter value for angle of triangle: "); //ask user for first angle of triangle

            angle1 = int.Parse(Console.ReadLine()); //take input for first angle

            Console.Write("Second value: "); //ask user for second angle

            angle2 = int.Parse(Console.ReadLine()); //take input for second angle

            Console.Write("Third value: "); //ask for third angle from user

            angle3 = int.Parse(Console.ReadLine()); //take input for third angle

            int sum = angle1 + angle2 + angle3; //to get angle add all 3 angles to form triangle

            //triangle angles is always 180 

            switch(sum) //switch, parameter has "sum" because that's what we need to form the triangle

            {

                case 1: //first case

                    Console.WriteLine("The triangle can be formed by the given values.");

                    break;

                case 2: //second case

                    Console.WriteLine("The triangle cant be formed by the given values.");

                    break;

                default: //I dont know how to explain what default does but it helps this code work

                    if(sum==180) //if statement, if "sum" is equal to 180 the following statement is used

                    {

                    Console.WriteLine("The triangle CAN be formed by the given values.");

                    }

                    else //else statement to use this statement if "sum" is NOT equal to 180

                    {

                        Console.WriteLine("The triangle can NOT be formed by the given values.");

                    }

                    break; //break to stop either cases(1 or 2) like if and else I guess

         }

      }

    }

   }