How do I remove the exception error from the following case in C++

case 4:
//here house wise
clrscr();
f1=0;
check=0;
V21:
cout<<"Enter house whose results are to be displayed:"<<endl;
gets(input1);
flag1=validstring(input1);
if(flag1==0)
goto V21;
else
strcpy(house1,input1);
ifstream ifile8("votingsystem",ios::binary);
while(!ifile8.eof())
{
  check++;
  ifile8.read((char*)&v,sizeof(v));
  if(ifile8.eof())
  {
    check++;
    break;
  }
  if((strcmpi(house1,v.gethouse()))==0)
  {
    if(f1==0)
    {
      cout<<"........................................................................\n";
      cout<<setw(20)<<"NAME OF THE CANDIDATE"<<setw(10)<<"CLASS"<<setw(10)<<"AGE"<<setw(10)<<"GENDER"<<setw(10)<<"HOUSE"<<setw(10)<<"VOTES"<<"\n";
      cout<<"............................................................................................................................................\n";
    }
    v.displaytabresult();
    f1++;
  }
}
ifile8.close();
if(check==2)
{
  cout<<"Please enter details first/n";
  getch();
  goto V1;
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if(f1==0)
cout<<"No such house exists"<<endl;
getch();
goto V6;