Hi,

I created the class for converting decimal to binary numbers and I wish to make the Windows application but there's an error: E2285 Could not find a match for 'TForm1::TForm1()' The source code:

//---------------------------------------------------------------------------

#include <vcl.h>
#include<math.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
class Convert: public TForm1{
     static unsigned int i;
     int conv_number[1000];
     unsigned int to_bin(unsigned int);    

      public:
      void convert(unsigned int);  
      void print_bin(); 
      Convert():TForm1(){};
      };

unsigned int Convert::i=0;

void Convert::convert(unsigned int number){

    while(number!=0)
        {
         conv_number[i]=to_bin(number);
         i++;
         number=number/2;
         }

    }
  
unsigned int Convert::to_bin(unsigned int y)
                        {
         double z;
         z=fmod(y,2);
         if (z==1)
         return 1;
         return 0;
}    


void Convert::print_bin(){
     
     while(i!=0)
     {
               
       i--;
       Memo1->Text=conv_number[i];
            }

}
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
Memo1->Text='\0' ;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{

Convert *obj;
obj = new Convert;
obj->convert(3123);
obj->print_bin();
}
//---------------------------------------------------------------------------

At the first place, I had problem with "Memo1 not defined" error. So I made class inherits TForm1 class and it disappeared. Also I had to create new object using new. And finally I get this error. I can't understand the problem. This is my first attempt to add class from Dev to Borland.
This class works fine in console.

Thanks.

I solved this problem!

I just should remove all connection between my and TForm class and call Memo1 like Form1->Memo1. So code should look like this:

//---------------------------------------------------------------------------

#include <vcl.h>
#include<math.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
class Convert{
     static unsigned int i;
     int conv_number[1000];
     unsigned int to_bin(unsigned int);  
      public:
      void convert(unsigned int); 
      void print_bin(); 

      };

unsigned int Convert::i=0;
prethodni>>
void Convert::convert(unsigned int number){

    while(number!=0)
        {
         conv_number[i]=to_bin(number);
         i++;
         number=number/2;
         }

    }

unsigned int Convert::to_bin(unsigned int y)
                        {
         double z;
         z=fmod(y,2);
         if (z==1)
         return 1;
         return 0;
}    


void Convert::print_bin(){

     while(i!=0)
     {
               
       i--;
         Form1->Memo1->Text = Form1->Memo1->Text + conv_number[i];
            }

}
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
Memo1->Text='\0' ;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{

Convert *obj;
obj = new Convert;

obj->convert(2);
obj->print_bin();
}
//---------------------------------------------------------------------------

Special thanks to a guy who gave me the idea of solving this problem! :)

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