Why do we use 0 in below statement?

Question

Console.WriteLine("Hello {0}")

Answer 1

You are missing the 0-index parameter:

Console.WriteLine("Hello {0}", "John");

Now the above code will output:

Hello John

To expand, you could use:

Console.WriteLine("Hello {0} {1}", "there", "John");

... which would output:

Hello there John

Answer 2

+ Console.WriteLine() calls string.Format() which means you can also use it to format strings example: string hw=string.Format("{0} {1}", "Hello", "World");

Answer 3

thanks buddy 😊