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// Fields of the structure.

public int X;

public int Y;

// Add 1 to the (X, Y) position.

public void Increment()

{

X++; Y++;

}

// Subtract 1 from the (X, Y) position.

public void Decrement()

{

X--; Y--;

}

// Display the current position.

public void Display()

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---

{

Console.WriteLine("X = {0}, Y = {1}", X, Y);

}

}

Here, we have defined our two integer data types (X and Y) using the public keyword, which is

an access control modifier (full details in the next chapter). Declaring data with the public keyword

ensures the caller has direct access to the data from a given Point variable (via the dot operator).