Please help me with the task: Sum and Difference finder

Hello, I’m working on this task:

Write a program that reads two doubles from the console, each from a new line, and outputs their sum and difference. For example:
>7.1
>3.5
10.6
3.6

Here is my code:


namespace DoubleType
{
   class ArithmeticOperations
   {
       static void Main(string[] args)
       {
           Console.WriteLine("first number: ");
           double num1 = double.Parse(Console.ReadLine());

           Console.WriteLine("second number: ");
           double num2 = double.Parse(Console.ReadLine());

           double sum = num1 + num2;
           double diff = num1 - num2;

           Console.WriteLine("the sum is " + sum);
           Console.WriteLine("the difference is " + diff);
       }
   }
}

Can anyone please help me to solve it?