I don't get it

Question

static void Main(string[] args)
{
int x = 10;
double y = 20;

Console.WriteLine("x = {0}; y = {1}", x, y);
}
// Output: x = 10; y = 20

I dont get the inside of writeline
I tried Console.Writeline(x, y); but i got an error: Argument 1: cannot convert from 'int' to 'string'

And I thought output shows between " " exact same.

Can you explain how that works?

Thanks in advance.

Answer 1

See the {0} and {1} as place holders.

Let's say this:

Console.WriteLine("{0} + {1} = {2}",1,1,2);

That basically mean that in the place of {0} there will be a 1, it's the first argument after the Formatting​ String (It's the "{0} + {1} = {2}" string)

Let's take this:

Console.WriteLine("{0} + {1} = {2}", 1, 1, 2);

{0} = 1
{1} = 1
{2} = 2

Then it's almost like:

Console.WriteLine("1 + 1 = 2");

I hope this helps

Answer 2

Yes i finally got it!
Much thanks