Formated string in c#

Question

Hi guys !
I've run into some issues while understanding the concept of formated string in basics lesson nr 4.
The first examples says as follows:
int x = 10
Console.WriteLine(x)
And the oucome is obvious it is 10.
However I dont undertand the second example:
int x = 10
double x = 20
Console.WriteLine(" x = {0} , y = {1}" , x,y)
And the output is displayed in the form x= 10 y=20
Why is so ? Why doesnt the console just show the value only ?
Thanks in advance.

Answer 1

It's a formatted string which consist of 2 placeholder {0} and {1} and the concept is very similar to array as we count from zero.

It will be quite messy if we didn't use formatted string which requires multiple concatenation:-

Console.WriteLine("x = " + x + ", y = " + y);