What does {0} stands for in Console.WriteLine?

Question

Given the code :

// person.cs
using System;

// #if false

class Person
{
    private string myName = \"N/A\";
    private int myAge = 0;

    // Declare a          


        

Answer 1

As you can see, There's a code on your person object that returns a string, Console checks for If a type of string with name of ToString exists on your object class or not, If exists then It returns your string:

public override string ToString()
{
     return "Name = " + Name + ", Age = " + Age;
}

And {0} Is a formatted message, When you define It to {0} It means printing/formatting the zero Index object that you Inserted Into params arguments of your function. It's a zero based number that gets the index of object you want, Here's an example:

Console.WriteLine("{0} Is great, {1} Do you think of It? {2} Think {0} Is great!", "C#", "What", "I");

// C# Is great, What do you think of It? I think C# Is great!

When you say {0} It gets C# or the [0] of your object[].