How could I inprove this code?

Question

this is the code::

https://code.sololearn.com/calBY5rHo4HR/#cs

Answer 1

//Your program is equal to this program.
using System
namespace ConsoleApp8
{

class Program
{
static void Main()
{
string input = Console.ReadLine();
if(input !="") {
if (input.Contains(" "))

string output = input.Replace(" ","");

Console.WriteLine(input);
}
}
}
}