Exercicio 5

static System.Boolean IsNumeric(System.Object Expression)
        {
            if (Expression == null || Expression is DateTime)
                return false;

            if (Expression is Int16 || Expression is Int32 || Expression is Int64 || Expression is Decimal || Expression is Single || Expression is Double || Expression is Boolean)
                return true;

            try
            {
                if (Expression is string)
                    Double.Parse(Expression as string);
                else
                    Double.Parse(Expression.ToString());
                return true;
            }
            catch { } // just dismiss errors but return false
            return false;
        }

    static void Main(string[] args)
        {
            int[] vetor = new int[16];

            for(int i = 0; i < vetor.Count(); i++)
            {
                debugKey:
                Console.Write("Digite o " + (i + 1) + "º número: ");
                string n = Console.ReadLine();
                if (IsNumeric(n))
                {
                    vetor[i]= int.Parse(n);
                    Console.WriteLine("");
                }
                else
                {
                    Console.WriteLine("");
                    Console.WriteLine("Error: Valor invalido!");
                    Console.WriteLine("");
                    goto debugKey;
                }
            }

            // Copiar valores a outro array
            int[] vetor2 = new int[vetor.Count()];
            for (int i = 0; i < vetor2.Count(); i++)
            {
                vetor2[i] = vetor[i];
            }


            // Inverter Valores
            for (int i = 0; i < 8; i++)
            {
                vetor[i] = vetor2[15 - i];
                vetor[15 - i] = vetor2[i];
            }

            Console.WriteLine("");
            Console.WriteLine("Valores dos Vetores");
            for (int i = 0; i < vetor.Count(); i++)
            {
                Console.WriteLine("Vetor nº" + (i + 1) +": " + vetor[i]);
            }

            Console.Read();
        }