public static void Main(string[] args)
{
Model M = new Model();
Triangle Trian = new Triangle();
while (true)
{
Console.Clear();
bool gonext = false;
while (!gonext)
{
//
Console.WriteLine("Enter A side in cm:");
var a = Console.ReadLine();
while (!a.HasNumberOnly()) //
{
Console.WriteLine("Wrong A. One more...");
a = Console.ReadLine();
}
double A = double.Parse(a);
//
Console.WriteLine("Enter B side in cm:");
var b = Console.ReadLine();
while (!b.HasNumberOnly()) //
{
Console.WriteLine("Wrong B. One more...");
b = Console.ReadLine();
}
double B = double.Parse(b); //
//
Console.WriteLine("Enter C side in cm:");
var c = Console.ReadLine();
while (!c.HasNumberOnly())
{
Console.WriteLine("Wrong C. One more...");
c = Console.ReadLine();
}
double C = double.Parse(c);
M.A = A; M.B = B; M.C = C;
gonext = Trian.IsValid(M);
}
// Calculate S triangle
var square = Trian.Squre(M);
Console.WriteLine("Square of triangle is {0} cm^2", square);
Console.WriteLine("If You want calculate squre again with new sides enter \"Yes\", another - exit.");
var ye = Console.ReadLine();
if (!(ye == "Yes" || ye == "yes"))
{
return;
}
}
}
public bool IsValid(Model mod)
{
if ((mod.A + mod.B > mod.C) && (mod.A + mod.C > mod.B) && (mod.C + mod.B > mod.A))
{
return true;
}
else
{
Console.WriteLine("Wrong size sides. Received figure is not a triangle");
}
return false;
}
private double SemiPerimetr(Model mod)
{
double p = (mod.A + mod.B + mod.C) / 2;
return p;
}
public double Squre(Model mod)
{
double p = SemiPerimetr(mod);
return S = Math.Sqrt(p * (p - mod.A) * (p - mod.B) * (p - mod.C));
}