| Код |
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Triangle
{
int a, b, c;
public int A
{
get
{
return a;
}
set
{
a = value;
}
}
public int B
{
get
{
return b;
}
set
{
b = value;
}
}
public int C
{
get
{
return c;
}
set
{
c = value;
}
}
public bool isTriangle
{
get
{
if (a + b > c && a + c > b && b + c > a)
{
return true;
}
return false;
}
}
public Triangle(int a_, int b_, int c_)
{
isCorrect(a_, b_, c_);
A = a_;
B = b_;
C = c_;
}
public void PrintSides()
{
Console.WriteLine("a = {0}, b = {1}, c = {2}", a, b, c);
}
public int Perimetr()
{
return a + b + c;
}
public double Square()
{
return Math.Sqrt(halfper(this) * (halfper(this) - a) * (halfper(this) - b)
* (halfper(this) - c));
}
static double halfper(Triangle Ob)
{
return Ob.Perimetr() / 2.0;
}
static void isCorrect(int a, int b, int c)
{
if (a < 0 || b < 0 || c < 0)
throw new Exception("Sides of triangle can` t be negative");
}
public static Triangle operator ++(Triangle Ob)
{
return new Triangle(++Ob.a, ++Ob.b, ++Ob.c);
}
public static Triangle operator --(Triangle Ob)
{
return new Triangle(--Ob.a, --Ob.b, --Ob.c);
}
public static Triangle operator *(Triangle Ob, int mult)
{
return new Triangle(Ob.a * mult, Ob.b * mult, Ob.c * mult);
}
public override string ToString()
{
return "Стороны: " + "a = " + A + " b = " + B + " c = " + C;
}
public int this[int idx]
{
get
{
if (idx == 1)
return a;
else if (idx == 2)
return b;
else if (idx == 3)
return c;
else
throw new Exception("idx can be only 1, 2 and 3");
}
set
{
if (idx == 1)
a = value;
else if (idx == 2)
b = value;
else if (idx == 3)
c = value;
else
throw new Exception("idx can be only 1, 2 and 3");
}
}
public static bool operator true(Triangle t)
{
return t.isTriangle;
}
public static bool operator false(Triangle t)
{
return t.isTriangle;
}
};
class Program
{
static void Main(string[] args)
{
try
{
Triangle Ob = new Triangle(3, 3, 3);
if (Ob)
Ob.PrintSides();
else
throw new Exception("There is no triangle with such sides");
Console.WriteLine("Perimetr={0}", Ob.Perimetr());
Console.WriteLine("Sqaure={0}", Ob.Square());
Ob++;
Ob.PrintSides();
--Ob;
Ob.PrintSides();
Ob *= 5;
Ob.PrintSides();
Console.WriteLine(Ob);
Console.WriteLine(Ob[1]);
Ob[2] = 30;
Console.WriteLine(Ob);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
Console.ReadKey();
}
}
}
}
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