public static ThreeD operator +(ThreeD op1, ThreeD op2)
{
ThreeD result = new ThreeD();
result.x = op1.x + op2.x;
result.y = op1.y + op2.y;
result.z = op1.z + op2.z;
return result;
}
public static ThreeD operator -(ThreeD op)
{
ThreeD result = new ThreeD();
result.x = -op.x;
result.y = -op.y;
result.z = -op.z;
return result;
}
static void Main(string[] args)
{
ThreeD a = new ThreeD(1, 2, 3);
ThreeD b = new ThreeD(10, 10, 10);
ThreeD c;
Console.WriteLine("Coordinates of point a: " + a);
Console.WriteLine("Coordinates of point b: " + b);
c = a + b;
Console.WriteLine("Result of addition a + b: " + c);
c = a + b + c;
Console.WriteLine("Result of addition a + b + c: " + c);
c = c - a;
Console.WriteLine("Result of subtraction c - a: " + c);
c = c - b;
Console.WriteLine("Result of subtraction c - b: " + c);
c = -a;
Console.WriteLine("Result of assignment -a: " + c);
Console.WriteLine();
c = a++;
Console.WriteLine("If c = a++");
Console.WriteLine("than coordinates of point c: " + c);
Console.WriteLine("and coordinates of point a: " + a);
a = new ThreeD(1, 2, 3);
Console.WriteLine();
Console.WriteLine("Setting of initial coordinates of point a: " + a);
Console.WriteLine();
c = --a;
Console.WriteLine("If c = --a");
Console.WriteLine("than coordinates of point c: " + c);
Console.WriteLine("and coordinates of point a: " + a);
Console.WriteLine();
c = b + 10;
Console.WriteLine("Result of addition b + 10: " + c);
c = 15 + b;
Console.WriteLine("Result of addition 15 + b: " + c);
c = b - 5;
Console.WriteLine("Result of subtraction b - 5: " + c);
ThreeD i = new ThreeD(5, 6, 7);
ThreeD j = new ThreeD(10, 10, 10);
ThreeD k = new ThreeD(1, 2, 3);
ThreeD l = new ThreeD(6, 7, 5);
Console.WriteLine();
if (i > k)
{
Console.WriteLine("i > k is true");
}
if (i < k)
{
Console.WriteLine("i < k is true");
}
if (i > j)
{
Console.WriteLine("i > j is true");
}
if (i < j)
{
Console.WriteLine("i < j is true");
}
if (i > l)
{
Console.WriteLine("i > l is true");
}
else if (i < l)
{
Console.WriteLine("i < l is true");
}
else
{
Console.WriteLine("Points i and l are at the same distance from the origin");
}
c = new ThreeD(0, 0, 0);
Console.WriteLine();
if (a)
{
Console.WriteLine("Point a is true.");
}
else
{
Console.WriteLine("Point a is false.");
}
if (b)
{
Console.WriteLine("Point b is true.");
}
else
{
Console.WriteLine("Point b is false.");
}
if (c)
{
Console.WriteLine("Point c is true.");
}
else
{
Console.WriteLine("Point c is false.");
}
Console.WriteLine();
if (a)
{
Console.WriteLine("Point a is true.");
}
if (b)
{
Console.WriteLine("Point b is true.");
}
if (c)
{
Console.WriteLine("Point c is true.");
}
if (!a)
{
Console.WriteLine("Point a is false.");
}
if (!b)
{
Console.WriteLine("Point b is false.");
}
if (!c)
{
Console.WriteLine("Point c is false.");
}
Console.WriteLine();
if (a & b)
{
Console.WriteLine("a & b is true.");
}
else
{
Console.WriteLine("a & b is false.");
}
if (a & c)
{
Console.WriteLine("a & c is true.");
}
else
{
Console.WriteLine("a & c is false.");
}
if (a | b)
{
Console.WriteLine("a | b is true.");
}
else
{
Console.WriteLine("a | b is false.");
}
if (a | c)
{
Console.WriteLine("a | c is true.");
}
else
{
Console.WriteLine("a | c is false.");
}
Console.WriteLine();
if (a && b)
{
Console.WriteLine("a && b is true.");
}
else
{
Console.WriteLine("a && b is false.");
}
if (a && c)
{
Console.WriteLine("a && c is true.");
}
else
{
Console.WriteLine("a && c is false.");
}
if (a || b)
{
Console.WriteLine("a || b is true.");
}
else
{
Console.WriteLine("a || b is false.");
}
if (a || c)
{
Console.WriteLine("a || c is true.");
}
else
{
Console.WriteLine("a || c is false.");
}
Console.WriteLine();
Console.WriteLine("Controlling a loop with an object of class ThreeD.");
do
{
Console.WriteLine(b);
b--;
} while (b);
}
