//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
#include <math.h>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
struct punkt
{
 float X;
 float Y;
};
//---------------------------------------------------------------------------
float dystans(punkt a, punkt b)
{
  float dx = a.X - b.X; 
  float dy = a.Y - b.Y;
  
  return sqrt(dx*dx + dy*dy);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  punkt A;
  A.X = 1.0;
  A.Y = 1.0;

  punkt B;
  B.X = 2.0;
  B.Y = 2.0;

  float q = dystans(A, B);

  Label1->Caption = FloatToStrF(q, ffNumber, 12, 2);        
}
//---------------------------------------------------------------------------