Counting the given text in the file (C++ Builder)

char* __fastcall TForm1::read_Ch(AnsiString name_File, int f_Size)

{

char *znaki=new char[f_Size];

FILE* fp;

fp=fopen(name_File.c_str(),"r");

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

fscanf(fp,"%c",&znaki[i]);

fclose(fp);

return znaki;

}

void __fastcall TForm1::init_Memo(AnsiString name_File, int f_Size)

{

Memo1->Lines->Append(AnsiString(read_Ch(name_File,f_Size)));

}

int __fastcall TForm1::sum_Txt(char *phrase)

{

int sum=0,i,count=Memo1->Lines->Count;

AnsiString *buff=new AnsiString[count];

for(i=0;i<count;i++)

{

buff[i]=Memo1->Lines->Text[i];

if(strcmp(buff[i].c_str(),phrase))

++sum;

}

delete buff;

return sum;

}

void __fastcall TForm1::Button1Click(TObject *Sender)

{

 AnsiString path;

 path="C:\\Users\\Public\\Documents\\Embarcadero\\Studio\\18.0\\GetItInstall.log";

 init_Memo(path,2048);

  AnsiString temp=Edit1->Text;

 int how_Many=sum_Txt(temp.c_str());

 Label1->Caption=IntToStr(how_Many);

 }

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

void __fastcall TForm1::Button2Click(TObject *Sender)

{

 Close();

}