Decoder.Cpp

#include <vcl.h>

#pragma hdrstop

USEFORM("Main.cpp", frmMain);

WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)

{

try

{

Application->Initialize();

Application->CreateForm(__classid(TfrmMain), &frmMain);

Application->Run();

}

catch (Exception &exception)

{

Application->ShowException(&exception);

}

catch (...)

{

try

{

throw Exception("");

}

catch (Exception &exception)

{

Application->ShowException(&exception);

}

}

return 0;

}

main.cpp

#include <vcl.h>

#include <dir.h>

#include <stdio.h>

#pragma hdrstop

#include "Main.h"

#pragma package(smart_init)

#pragma resource "*.dfm"

TfrmMain *frmMain;

__fastcall TfrmMain::TfrmMain(TComponent* Owner)

: TForm(Owner)

{

InputFile = "";

N = 9;

}

void TfrmMain::ShowBits(TMemo *Memo, int **bits, int len, int count)

{

for (int i=0;i<=len;i++)

{

AnsiString temp="";

for (int j=1;j<=count;j++)

temp += IntToStr(bits[i][j]);

Memo->Lines->Add(temp);

}

}

int xor(int x, int y)

{

if ((!x)&&(!y)) return 0;

if ((!x)&&(y)) return 1;

if ((x)&&(!y)) return 1;

if ((x)&&(y)) return 0;

}

int CorrectChecking(int *word, int len, int bit)

{

int sum = 0;

for (int i=1;i<=len;i++)

{

sum = xor(sum,word[i]);

}

return xor(sum,bit);

}

int *GetErrors(int **words, int len, int count)

{

int *ans;

ans = new int [len+1];

for (int i=0;i<=len;i++)

ans[i] = CorrectChecking(words[i],count-1,words[i][count]);

return ans;

}

void __fastcall TfrmMain::btnOpenClick(TObject *Sender)

{

if ((OpenDialog->Execute())&&(FileExists(OpenDialog->FileName)))

InputFile = OpenDialog->FileName;

mmInput->Lines->LoadFromFile(InputFile);

FILE *file;

file = fopen(InputFile.c_str(),"r");

Length = mmInput->Lines->Count;

Length--;

even = new int *[Length+1];

errors = new int [Length+1];

char ch;

for (int i=0;i<=Length;i++)

{

even[i] = new int [N+1];

even[i][0] = 0;

int j=0;

do

{

fscanf(file,"%c",&ch);

if (ch=='0') even[i][j] = 0;

if (ch=='1') even[i][j] = 1;

j++;

}while ((ch!='\n')&&(!feof(file)));

}

errors = GetErrors(even,Length,9);

for (int j=0;j<=Length;j++)

mmResult->Lines->Add(errors[j]);

}

void __fastcall TfrmMain::btnCloseClick(TObject *Sender)

{

Close();

}

Листинг программы, реализующей код Хэмминга. Кодер.

coder.cpp

#include <vcl.h>

#pragma hdrstop

USEFORM("Main.cpp", frmMain);

WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)

{

try

{

Application->Initialize();

Application->CreateForm(__classid(TfrmMain), &frmMain);

Application->Run();

}

catch (Exception &exception)

{

Application->ShowException(&exception);

}

catch (...)

{

try

{

throw Exception("");

}

catch (Exception &exception)

{

Application->ShowException(&exception);

}

}

return 0;

}