C++

Forum

 
writing to file

fran101 (4)
I trying to add records to a binary file but for some reason it takes all the inputs but then will not write them to the file. I have tried various ways of opening the file but still no luck. I am not sure why it will not write.

Here is the code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
 
void add_question_details(void)
{
     struct question quiz;
     fstream out_quiz;
     char reply;
     bool ok;     //true false data type

     out_quiz.open("E:\\pupilfiles\\questions.dat",ios::binary|ios::in|ios::out);

     if ( out_quiz.good())
     {

             if( !out_quiz.eof())
         {
             out_quiz.seekg( (long) sizeof(struct question) * -1, ios::app);
             out_quiz.read ((char*)& quiz, sizeof(struct question));
            quiz.question_no = quiz.question_no+1;

         }
         else
         quiz.question_no = 1;




             do
         {
                set_up_interface("E:\\pupilfiles\\add_question.txt");

               do
               {
                    ok = true;
                    gotoxy(17,7); cout << "______________________________________________________________";
                     gotoxy(17,7); cin.getline(quiz.question,100,'\n');

                    if ( strlen(quiz.question) < 3)
                    {
                         ok=false;
                        message(30,24,"Question must be at least 3 Characters");
                    }

               }while( ! ok);

               do
               {
                     ok =true;
                     gotoxy(35,10); cout << "________________________";
                        gotoxy(35,10); cin.getline(quiz.ansa,20,'\n');

                     if ( strlen(quiz.ansa) < 3)
                     {
                         ok=false;
                        message(30,24,"Answer A must be at least 3 Characters");
                     }

               } while (! ok);

               do
               {
                     ok =true;
                     gotoxy(35,12); cout << "________________________";
                        gotoxy(35,12); cin.getline(quiz.ansb,20,'\n');

                     if ( strlen(quiz.ansb) < 3)
                     {
                         ok=false;
                        message(30,24,"Answer B must be at least 3 Characters");
                     }

               } while (! ok);

               do
               {
                     ok =true;
                     gotoxy(35,14); cout << "________________________";
                        gotoxy(35,14); cin.getline(quiz.ansc,20,'\n');

                     if ( strlen(quiz.ansc) < 3)
                     {
                         ok=false;
                        message(30,24,"Answer C must be at least 3 Characters");
                     }

               } while (! ok);

               do
               {
                     ok =true;
                     gotoxy(35,16); cout << "________________________";
                        gotoxy(35,16); cin.getline(quiz.ansd,20,'\n');

                     if ( strlen(quiz.ansd) < 3)
                     {
                         ok=false;
                        message(30,24,"Answer D must be at least 3 Characters");
                     }

               } while (! ok);

               gotoxy(53,18);cout<< "_";
               gotoxy(53,18); cin.getline(quiz.right_answer,20,'\n');
               quiz.right_answer[0] = toupper (quiz.right_answer[0]);

               quiz.quiz_level= get_option(53,20,1,5);



               out_quiz.write((char *) & quiz, sizeof(struct question));
               if ( out_quiz.good())
                   message(30,24,"Question Written to File");
                  else
                  message(30,24,"Question NOT Written to File");

               reply = again(53,22);
         } while ( reply=='Y');
         out_quiz.close();
     }
      else
         message(30,24,"Cannot Open Question File");
}


but when it gets to here the output i get is question has NOT written to file

1
2
3
4
5
 
out_quiz.write((char *) & quiz, sizeof(struct question));
               if ( out_quiz.good())
                   message(30,24,"Question Written to File");
                  else
                  message(30,24,"Question NOT Written to File");


Any help would be much appreciated
Last edited on
Topic archived. No new replies allowed.