https://pt.stackoverflow.com/q/430014/101 | C# Online Compiler

https://pt.stackoverflow.com/q/430014/101 by bigown

using static System.Console;
#nullable enable
			
public class Program {
	public static void Main() {
		Carro carro = default;
		WriteLine(carro.Marca);
		Carro? carro2 = default;
		WriteLine(carro2.Marca);
		Carro carro3 = new Carro();
		WriteLine(carro3.Marca);
	}
}

public class Carro {
	public string Marca;
	public string Modelo = "";
	public string? Tipo;
}

​x
 
using static System.Console;
#nullable enable
            
public class Program {
    public static void Main() {
        Carro carro = default;
        WriteLine(carro.Marca);
        Carro? carro2 = default;
        WriteLine(carro2.Marca);
        Carro carro3 = new Carro();
        WriteLine(carro3.Marca);
    }
}
​
public class Carro {
    public string Marca;
    public string Modelo = "";
    public string? Tipo;
}

Environment version: .NET 9.0.0 (9.0.0)
System.Text.Json version: System.Text.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51

Testing deserialization of "" to type System.Nullable`1[System.DateTime]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Int32]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Double]:
   Succeeded, value = null
Testing deserialization of "" to type System.Nullable`1[System.Decimal]:
   Succeeded, value = null
Testing round-trip of System.Nullable`1[System.DateTime] 06/12/2025 00:22:53
   Passed.
Testing round-trip of System.Nullable`1[System.DateTime]
   Passed.
Testing round-trip of System.DateTime 06/12/2025 00:22:53
   Passed.
Testing round-trip of System.Nullable`1[System.Int32] 1
   Passed.
Testing round-trip of System.Nullable`1[System.Int32]
   Passed.
Testing round-trip of System.Nullable`1[System.Decimal] 1.010101
   Passed.
Testing round-trip of System.Nullable`1[System.Decimal]
   Passed.
Testing round-trip of System.Nullable`1[System.Double] 1.010101
   Passed.
Testing round-trip of System.Nullable`1[System.Double]
   Passed.

Cached Result
Last Run:	12:22:52 am
Compile:	0.061s
Execute:	0.21s
Memory:	20.87Mb
CPU:	0.271s

View IL Code