Can you explain what the 'out' term means in programming?

In the C# language, the keyword out is used to pass parameters to methods by reference, and the method must assign a value to this parameter before exiting. This allows returning multiple values from a method.

The difference from ref is that ref requires the variable to be initialized before passing, whereas out does not.

Example of using out:

void GetCoordinates(out int x, out int y) {
    x = 10;
    y = 20;
}

int a, b;
GetCoordinates(out a, out b);
Console.WriteLine($"X = {a}, Y = {b}");

Here, the GetCoordinates method assigns values to variables a and b through out parameters.