Is it possible to include a constructor without arguments in a structure definition in a programming language?

In C#, structs (struct) automatically have a parameterless constructor that initializes all fields with default values. However, starting with C# 10, it became possible to explicitly define parameterless constructors in structs.

Before C# 10, you could not explicitly declare a parameterless constructor in a struct, only constructors with parameters. If you declare a constructor with parameters, the default parameterless constructor still exists and initializes fields with default values.

Example of a parameterless constructor in a struct (C# 10+):

public struct Point
{
    public int X;
    public int Y;

    public Point() // explicit parameterless constructor
    {
        X = 0;
        Y = 0;
    }
}

If the C# version is below 10, such code will cause an error.