Pascal : How to display an error msg when integer entered for a name?

[adotl]

I dont know if Im far off with this, The user enters their name and I want them to only enter in a string so if they enter in a number Id like an error message, any ideas?

program Word;
uses crt;
   var
      letter: string;
   begin
      clrscr;
      Repeat
         writeln('What is your name? ');
         readln(letter);
         if (letter >=UPCASE('a')) AND (letter <=UPCASE('z')) then
         begin
            writeln('Correct Answer ');
         end
         else
         begin
            writeln('Word needs to be entered');
            end;
      Until (letter >=UPCASE('a')) AND (letter <=UPCASE('z'));
      {-------------------Printing Results------------------}
      writeln('The name is ', letter);
      readln;
   end.

[yhoezt]

why not u use array in ...so if user enter in that array..u show the error message...

[adotl]

Interesting..good thinking thanks.. but would that not still limit the answer to just being an integer tho?