public static void Main()
Console.WriteLine("=====Calculator==========");
Console.WriteLine("Enter first number :");
int johnny1 = int.Parse(Console.ReadLine());
Console.WriteLine("Enter second number :");
int johnny2 = int.Parse(Console.ReadLine());
campaner1= johnny1 + johnny2;
campaner2= johnny1 - johnny2;
campaner3= johnny1 / johnny2;
campaner4= johnny1 * johnny2;
Console.WriteLine("sum : {0}",campaner1);
Console.WriteLine("difference : {0}",campaner2);
Console.WriteLine("devide : {0}",campaner3);
Console.WriteLine("multiplication : {0}",campaner4);