How is the passing of meaningful data types to the called method implemented and what does it imply?

In C#, value types such as structures (struct) are passed to methods by value. This means that when calling a method, a copy of the value is created, and any changes within the method do not affect the original object.

Example:

struct Point {
    public int X, Y;
}

void MovePoint(Point p) {
    p.X += 10; // modifies the copy
}

Point pt = new Point { X = 5, Y = 5 };
MovePoint(pt);
// pt.X remains 5

To modify the original object, you can pass the parameter by reference using the ref or out keyword.