Why do we have in output "Hello {0}..." what does {0} mean?

Answer 1

Thanks for helping me out :)

Answer 2

{0} is a placeholder to make strings with embedded values more readable.

Answer 3

int i =22;
Console.WriteLine("hello {0}",i);

the second line can be read this way:
put the value of I (22) in the place of {0}

output: "hello 22"

Answer 4

So when:
int i=34
int y=35

Console.WriteLine("Numbers are: {0} {1}", i, y);

It should look like this:
Numbers are 34 35

Answer 5

exactly