Re: [Dev-C++] error message

[Luigi S. <gi...@li...>]

At 08.09 07/06/02 +0200, h.r...@gm... wrote:
>...
>At second:
>In the following code is an error, but i cannot find it. Always if i type q
>to finish the data entry i get a error message :
>
>testproj1.exe Fehler in Anwendung
>Die Anweisung in "0x00401b21" verweist auf Speicher "0x00000000". Der
>Vorgang "read konnte nicht auf dem Speicher durchgef=FChrt werden...
>
>Codesnip:
>
>string SP(size_t n) {
>   string s(n, ' ');
>   return s;
>}
>
>bool ReadDataKbd(const string &s) {
>   ofstream out(s.c_str());
>
>   string ein;
>
>   cout << "Sollwert:" << SP(6);
>   cin >> ein;
>   out << ein << endl;
>
>   cout << "Untere Grenze: ";
>   cin >> ein;
>   out << ein << endl;
>
>   cout << "Obere Grenze:  ";
>   cin >> ein;
>   out << ein << endl;
>
>   bool finished;
>   int cnt =3D 1;
>   size_t w =3D 5;
>
>   do {
>     if (cnt > 99) w =3D 3;
>     else if (cnt > 9) w =3D 4;
>
>     cout << "Messwert " << cnt << SP(w);
>     cin >> ein;
>     if (finished =3D (ein[0] =3D=3D 'q')) break;
>     out << ein << endl;
>     cnt++;
>   } while (!finished);
>
>   out.close();
>   return true;
>}
>
>Thanks in advance
>
>greetings
>Horst


Hi,

I've added the following function "main" to test your program:

-------------
int
main()
{
    ReadDataKbd("test.out");
}
------------

And found that the code works. i.e. I saw no extra output on the Dos box=20
where I was running. My answers to the questions asked by your program were=
=20
(sorry I could do no better since I do not understand the meaning of them :)

Sollwert:      aa
Untere Grenze: bb
Obere Grenze:  cc
Messwert 1     dd
Messwert 2     ee
Messwert 3     q

and here is the output file

test.out
--------
aa
bb
cc
dd
ee
--------

I use: Dev 4.9.3.0 (gcc 2.95) on Win98SE.

--
Luigi
gi...@li...