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error checking of user input

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Join Date: Sep 2004

Posts: 7,783

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Narue

Offline

Code Goddess

Re: error checking of user input

#11

Apr 18th, 2005

And here I thought you were asking for something odd. All of the examples I first gave you do exactly what you want. But since you seem exceptionally helpless, I'll solve your problem for you (just this once though):

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bool is_valid_name ( char name[] )
{
  for ( int i = 0; name[i] != '\0'; i++ )
  {
    if ( !isalpha ( name[i] )
      return false;
  }
 
  return true;
}
 
void game::get_name()
{
  cout << "Enter your name? ";
  cin.getline(player_name, 50);
 
  while(!is_valid_name(player_name))
  {
    cout << "You must enter a name and not a digit!" << "\n""\n";
 
    clear_screen();
 
    cout << "Enter your name? ";
    cin.getline(player_name, 50);
  }
}
bool is_valid_name ( char name[] )
{
  for ( int i = 0; name[i] != '\0'; i++ )
  {
    if ( !isalpha ( name[i] )
      return false;
  }

  return true;
}

void game::get_name()
{
  cout << "Enter your name? ";
  cin.getline(player_name, 50);

  while(!is_valid_name(player_name))
  {
    cout << "You must enter a name and not a digit!" << "\n""\n";

    clear_screen();

    cout << "Enter your name? ";
    cin.getline(player_name, 50);
  }
}