Create Scientific Calculator in Visual C++

Hi to all,

THis is my first post here.

I have a project to create a scientific calculator.

i wrote a code and i need some help on how to proceed.
The code i wrote is for +, - , * , /
now i want to continue with x^y, arc,tan etc.

any ideas on how to proceed with these?

Thanks in advance.

Code:

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

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"

BOOL IsNumber(AnsiString s)
{
int i;
BOOL itis=true;
for (i=1 ; i<=s.Length() ; i++)
if (!isdigit(s[i]) && s[i]!=',' && s[i]!='-') itis=false;
return itis;
}

TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button11Click(TObject *Sender)
{
Form1 -> Close();        
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button9Click(TObject *Sender)
{
Edit1 -> Clear();
Edit2 -> Clear();
Edit3 -> Clear();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button10Click(TObject *Sender)
{
Form2 -> ShowModal();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
if (IsNumber(Edit1->Text) && IsNumber(Edit2->Text))
Edit3->Text=Edit1->Text.ToDouble() + Edit2->Text.ToDouble();
else
MessageBox(NULL,"Not a number", "About Form",MB_OK|MB_ICONSTOP);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
if (IsNumber(Edit1->Text) && IsNumber(Edit2->Text))
Edit3->Text=Edit1->Text.ToDouble() - Edit2->Text.ToDouble();
else
MessageBox(NULL,"Not a number", "About Form",MB_OK|MB_ICONSTOP);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
if (IsNumber(Edit1->Text) && IsNumber(Edit2->Text))
Edit3->Text=Edit1->Text.ToDouble() * Edit2->Text.ToDouble();
else
MessageBox(NULL,"Not a number", "About Form",MB_OK|MB_ICONSTOP);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button4Click(TObject *Sender)
{
if (IsNumber(Edit1->Text) && IsNumber(Edit2->Text))
Edit3->Text=Edit1->Text.ToDouble() / Edit2->Text.ToDouble();
else
MessageBox(NULL,"Not a number", "About Form",MB_OK|MB_ICONSTOP);
}
//---------------------------------------------------------------------------

Yeah, that's not Visual C++ code...copypasta fail!

Originally Posted by rags_to_riches

Yeah, that's not Visual C++ code...copypasta fail!

it is .. and it is in Borland.
i can send you the hole program if you want via e-mail

Originally Posted by andrew80

it is .. and it is in Borland.
i can send you the hole program if you want via e-mail

Most likely no one is interested in the whole program. You need to think a little harder about how what you are asking for looks to people who are not you. In other words, provide some more explanation in your own words (it's near impossible to separate intentions from mistakes, etc, when reading beginner code), and ask more specific problems.

Eg. how to you think you should proceed? What have you tried? Are the any technical issues you want to ask about before you decide? And so on.

How To Ask Questions The Smart Way

Ignore at your own risk