I am making a crossword puzzle game
First of all, I would show the question first.
It need to fill in the answer.
My problem is how can I display the answer after the user entered his answer.
How can I prevent him not to play the same question again

: I am making a crossword puzzle game
: First of all, I would show the question first.
: It need to fill in the answer.
: My problem is how can I display the answer after the user entered his answer.
: How can I prevent him not to play the same question again
:
Display: That depends on the way you store the answers. If you are using a 2D-array of char, then you'll need a nested for-do loop and GotoXY(), write() and/or writeln(). If the answers are stored in a 1-D array of string, you only need 1 for-do loop and writeln().

Prevent: Add a boolean for each question, which you initialize to false. If the user want to answer a question, first check that boolean. If it is false, ask the question and set it to true. Otherwise give the user a message that he already answered the question.

: : I am making a crossword puzzle game
: : First of all, I would show the question first.
: : It need to fill in the answer.
: : My problem is how can I display the answer after the user entered his answer.
: : How can I prevent him not to play the same question again
: :
: Display: That depends on the way you store the answers. If you are using a 2D-array of char, then you'll need a nested for-do loop and GotoXY(), write() and/or writeln(). If the answers are stored in a 1-D array of string, you only need 1 for-do loop and writeln().
:
: Prevent: Add a boolean for each question, which you initialize to false. If the user want to answer a question, first check that boolean. If it is false, ask the question and set it to true. Otherwise give the user a message that he already answered the question.
:
Well I really need a sample

can u give it to me?
I really need it
thx

: : Prevent: Add a boolean for each question, which you initialize to false. If the user want to answer a question, first check that boolean. If it is false, ask the question and set it to true. Otherwise give the user a message that he already answered the question.

But my question is inside the textfile
I read the question from the file
and display it

: : : Prevent: Add a boolean for each question, which you initialize to false. If the user want to answer a question, first check that boolean. If it is false, ask the question and set it to true. Otherwise give the user a message that he already answered the question.
:
: But my question is inside the textfile
: I read the question from the file
: and display it
:
Then you need to write to another file, which questions the user has answered. If the user wants to answer a question, first check if that question is already listed. If it is, warn the user. Otherwise ask the question.

: Then you need to write to another file, which questions the user has answered. If the user wants to answer a question, first check if that question is already listed. If it is, warn the user. Otherwise ask the question.
:
I know how to do it.
But I have another question
How can I display the question again after I enter the answer
and display the answer in the position which I wanted.
And I still don't know how to prevent the user answer the same question again.
can u give me example.
Thx!

: : Then you need to write to another file, which questions the user has answered. If the user wants to answer a question, first check if that question is already listed. If it is, warn the user. Otherwise ask the question.
: :
: I know how to do it.
: But I have another question
: How can I display the question again after I enter the answer
: and display the answer in the position which I wanted.
: And I still don't know how to prevent the user answer the same question again.
: can u give me example.
: Thx!
:
To display text at the same position you need to use the GotoXY() procedure. It's located in the CRT unit.
Here is a sample code to check if user has already answered the question:

var
  f: text;
  i: integer;
  AlreadyAnswered: boolean;
begin
  AlreadyAnswered := false;
  Assign(f, 'aa.dat');
  Reset(f);
  while not eof(f) do
  begin
    readln(f, i);
    AlreadyAnswered := i = QuestionIndex;
    if AlreadyAnswered then Break; { If found, break out of the loop }
  end;
  Close(f);
  if not AlreadyAnswered then
  begin
    { Ask question }
    { Update Already-Answered File: }
    Assign(f, 'aa.dat');
    Append(f);
    writeln(f, QuestionIndex);
    Close(f);
  end;
end;

The variable QuestionIndex is an integer indicating, which question the user wishes to answer. Remember to clear the aa.dat file before the game using Rewrite().