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using System;
class TwoDimension {
int x, y;
public TwoDimension() {
x = y = 0;
}
public TwoDimension(int i, int j) {
x = i;
y = j;
}
// Overload binary +.
public static TwoDimension operator +(TwoDimension op1, TwoDimension op2)
{
TwoDimension result = new TwoDimension();
result.x = op1.x + op2.x;
result.y = op1.y + op2.y;
return result;
}
// An implicit conversion from TwoDimension to int.
public static implicit operator int(TwoDimension op1)
{
return op1.x * op1.y;
}
// Show X, Y
public void show()
{
Console.WriteLine(x + ", " + y);
}
}
class MainClass {
public static void Main() {
TwoDimension a = new TwoDimension(1, 2);
TwoDimension b = new TwoDimension(10, 10);
TwoDimension c = new TwoDimension();
int i;
Console.Write("Here is a: ");
a.show();
Console.WriteLine();
Console.Write("Here is b: ");
b.show();
Console.WriteLine();
c = a + b; // add a and b together
Console.Write("Result of a + b: ");
c.show();
Console.WriteLine();
i = a; // convert to int
Console.WriteLine("Result of i = a: " + i);
Console.WriteLine();
i = a * 2 - b; // convert to int
Console.WriteLine("result of a * 2 - b: " + i);
}
}
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