public static void Main()
Console.WriteLine("Enter integers:\n");
num1=Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter integers:\n");
num2=Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter the operation to be performed:\n");
str=Convert.ToString(Console.ReadLine());
Console.WriteLine("The value is:{0}",num);
Console.WriteLine("The value is:{0}",num);
Console.WriteLine("The value is:{0}",num);
Console.WriteLine("The value is:{0}",num);
Console.WriteLine("Enter valid option");