What kind of error it is?

Question

https://code.sololearn.com/cbN6i3xvlRRW/?ref=app

Answer 1

You're trying to call a non-static method from a static method. Add a static modifier to your EvenOdd() method on line 15.

Answer 2

int n= Convert.ToInt32(Console.ReadLine());
if(n%2==0)
{
Console.WriteLine("{0} is even",n);
}
else
{
Console.WriteLine("{0} is odd",n);
}