public static void Main()
string name = "Hello, C sharp";
Console.WriteLine(name + " sum: " + sum);
string input = Console.ReadLine();
int inputNum = int.Parse(input);
string inputSum = input + input;
int inputNumSum = inputNum + inputNum;
Console.WriteLine("InputNew {0}!", inputSum);
Console.WriteLine("InputNumNew: {0} ", inputNumSum);