using System;
using System.Reflection;

namespace exercicios
{
	class Exercicio5
		{
			public static void Init()
			{
				string sel = "";
				
				Console.WriteLine("Select an operation:"+
									"\n1 - Sum"+
									"\n2 - Subtract"+
									"\n3 - Divide"+
									"\n4 - Multiply"+
									"\n5 - Div. Remains"+
									"\n6 - Double"+
									"\n7 - Squared"+
									"\n8 - Cubed"+
									"\n9 - Square Root"+
									"\n0 - Exit");
									
				sel = Console.ReadLine();
				if(sel != "0"){
					Console.WriteLine("Insert a value and press Enter (2)");
					Type typesPrograma = typeof(Exercicio5);
					MethodInfo aInvocar = typesPrograma.GetMethod(
						"op"+sel, BindingFlags.Static | BindingFlags.NonPublic);
					aInvocar.Invoke(null, null);
				}
			}
			static void op1()
			{
				int i, i2;
				i = int.Parse(Console.ReadLine());
				i2 = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0} + {1} = {2}",i,i2,i+i2);
			}
			static void op2()
			{
				int i, i2;
				i = int.Parse(Console.ReadLine());
				i2 = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0} - {1} = {2}",i,i2,i-i2);
			}
			static void op3()
			{
				int i, i2;
				i = int.Parse(Console.ReadLine());
				i2 = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0} / {1} = {2:N2}",i,i2,(double)i/i2);
			}
			static void op4()
			{
				int i, i2;
				i = int.Parse(Console.ReadLine());
				i2 = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0} * {1} = {2}",i,i2,i*i2);
			}
			static void op5()
			{
				int i, i2;
				i = int.Parse(Console.ReadLine());
				i2 = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0} % {1} = {2}",i,i2,(double)i%i2);
			}
			static void op6()
			{
				int i;
				i = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0}*2 = {1}",i,i*2);
			}
			static void op7()
			{
				int i;
				i = int.Parse(Console.ReadLine());
				
				Console.WriteLine("{0}^2 = {1}",i,i*i);
			}
			static void op8()
			{
				int i;
				i = int.Parse(Console.ReadLine());
				Console.WriteLine("{0}^3 = {1}",i,i*i*i);
				
			}
			static void op9()
			{
				int i;
				i = int.Parse(Console.ReadLine());
				
				Console.WriteLine("Sqrt({0}) = {1}",i,Math.Sqrt(i));
			}
			static void op10()
			{
				
			}
	}
}