Question

Compiling Proble with Rad Studio C++ 2010

Asked by: Giampete

Am getting the following error message what do I need to do to resolve it?
[ILINK32 Error] Error: Unresolved external '_main' referenced from C:\PROGRAM FILES\EMBARCADERO\RAD STUDIO\7.0\LIB\C0X32.OBJ
[ILINK32 Error] Error: Unable to perform link

//---------------------------------------------------------------------------
 
#include <vcl.h>
#include<math.h>
#pragma hdrstop
 
#include "Concrete_Section01.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
	: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::SpeedButton1Click(TObject *Sender)
{
double m,b,dd,d,c,db,fc,as,asr,fy;
 
 
m=Umoment->Text.ToDouble();
b=Bwidth->Text.ToDouble();
dd=Ddepth->Text.ToDouble();
c=Cover->Text.ToDouble();
db=dbar->Text.ToDouble();
fc=Fconc->Text.ToDouble();
fy=Fy->Text.ToDouble();
 
 
d=dd-c-db;
asr=(1-pow((1-3e6*m/(b*pow(d,2)*fc)),0.5))/(1.2*(fy/(b*d*fc)));
Astr->Text=String(asr);
return;
 
 
 
}
//--------------------------

                                  
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Asked On
2009-10-21 at 18:36:01ID24833001
Tags

Error Message

Topics

C++ Builder

,

C++ Programming Language

,

Microsoft Visual C++

Participating Experts
2
Points
500
Comments
5

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Answers

 

by: evilrixPosted on 2009-10-23 at 02:03:22ID: 25642468

>> [ILINK32 Error] Error: Unresolved external '_main' referenced from C:\PROGRAM FILES\EMBARCADERO\RAD STUDIO\7.0\LIB\C0X32.OBJ

Normal C++ programs (executables, not libraries) require main() to be defined, which is the entry point to the application. Without it you will get a linker error as the linker expects to find it.

int main()
{
   // Call the rest of your code from here
}

                                              
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by: pgnatyukPosted on 2009-10-23 at 02:30:09ID: 25642630

It is C++ Builder code:
http://www.embarcadero.com/products/cbuilder/faq

with a GUI:

__fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner)

Here you can read how to make the simplest application in C++ Builder:

http://www.onecore.net/borland-c-builder-windows-application.htm

#includewindows.h
 
#pragma hdrstop
#pragma argsused
 
WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 
             LPSTR lpCmdLine, int nCmdShow)
{
      return 0;
}
                                              
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