public static void Main()
{ int sum,multiply,subtract;
Console.WriteLine("Enter First Number");
a=int.Parse(Console.ReadLine());
Console.WriteLine("Enter The Second Number");
b=int.Parse(Console.ReadLine());
Console.WriteLine("Sum={0}",sum);
Console.WriteLine("Multiply={0}",multiply);
Console.WriteLine("Subtract={0}",subtract);
Console.WriteLine("Divide = {0}",divide);
Console.WriteLine("Modulus={0}",modulus);
Console.WriteLine("Congratulation!");