public static void Main()
Console.WriteLine("\n\n ");
Console.WriteLine("Display n term of natural and their sum\n ");
Console.WriteLine("--------------------------------------------\n");
Console.WriteLine("Please enter a number to get the sum of it (you will be hack)\n ");
input = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("\nThe first {0} natural number are: \n ", input);
for ( i = 0; i <= input; i++ );
Console.WriteLine("{0}", i);
Console.WriteLine("\nThe sum of the natural Number upto {0} term : {1}\n", input, sum);