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Program for file is crashing

vishesh92 (6)
Program is crashing, if the DAT file exists. Please help!

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  #include<iostream>
#include<fstream>
#include<iomanip>
#include<string>

using namespace std;

class comp
{
private:

    string status;
    string s;


public:
    struct tm * date;
    int comp_no;
    void get_data(int count)
    {
        comp_no = count;
        cout<<"Enter The Complaint:\n";
        getline(cin, s);

        cout<<"\nYour Complaint has been registered.\nYour Complaint number is: "<<comp_no<<"\n";
        status = "Unsolved";


    }
    void put_data()
    {
        cout<<"\n\nComplaint Number: "<<comp_no<<"\nThe status of the complaint: "<<status<<"\nThe complaint is:\n"<<s<<"\n\n\n";
    }
};

int main()
{
    comp c;
    bool ex = true;
    int ch, ch2;
    fstream inoutfile;
    int d,m,y;
    int count = 0;
    inoutfile.open("complaints.dat", ios::ate | ios::app | ios::in | ios::out | ios::binary);
    inoutfile.seekg(0,ios::beg);

    while(inoutfile.read((char *) &c, sizeof (c)))
    {
        count++;
    }
    inoutfile.clear();

    while(ex)
    {
        cout<<"\nWhat would you like to do?\n"
            <<"To register a complaint, enter 1\n"
            <<"To search for a complaint, enter 2\n"
            <<"To update the status of a complaint to solved, enter 3\n"
            <<"To exit, enter 0\n";
        cin>>ch;
        switch (ch)
        {
        case 0:
        {
            ex = false;
            break;
        }
        case 1:
        {
            
            cin.ignore();
            inoutfile.seekg(0, ios::end);
            inoutfile.seekp(0,ios::end);
            count++;
            c.get_data(count);
            inoutfile.write((char *) &c, sizeof (c));
            break;
        }
        case 2:
        {
            inoutfile.clear();
            inoutfile.seekg(0,ios::beg);
            inoutfile.seekp(0,ios::beg);

            while(inoutfile.read((char *) &c, sizeof (c)))
            {

                    c.put_data();
                //else
                  //  cout<<"\nNo Record Found\n";
            }
            break;
        }
        case 3:
        {
            cout<<"\nEnter the complaint number whose status is to be updated: ";
            cin>>d;
            inoutfile.seekp(0,ios::beg);
            inoutfile.seekg(0,ios::beg);

            char flag;
            fstream temp;
            temp.open("temp.dat", ios::ate | ios::in | ios::out | ios::binary);
            while(inoutfile.read((char *) &c, sizeof (c)))
            {
                if(c.comp_no == d )
                {
                    flag='y';
                    cout<<"\nComplaint Status is now updated to Solved\n";
                    c.put_data();
                }
                if(!inoutfile.eof())
                {
                    temp.write((char*) &c, sizeof (c));
                }
                else
                    break;
            }
            if(flag!='y')
                cout<<"\n sorry no such record present ";
            inoutfile.close();
            temp.close();
            remove("complaints.dat");
            rename("temp.dat" ,"complaints.dat");
            inoutfile.open("complaints.dat", ios::ate | ios::in | ios::out | ios::binary);
            break;
        }

        default:
        {
            cout<<"\nEnter Correct Option\n";
            break;
        }
        }
    }

    inoutfile.close();
    return 0;
}
Last edited on
ne555 (10692)
LaboPie (39)
Are you sure that complaints.dat exist in the right directory? It's a good practice to put a guard after opening a file for checking his existence... Maybe a inoutfile.good() or a inoutfile.is_open() will help you to check if the file exist in the proper directory...
c0defisher (13)
what compiler are you using?? i dont think the complaints are getting stored properly in your respective file , option 3 of your program does not work. check your logic again
vishesh92 (6)
I am using CodeBlocks. But the problems isn't there. A file is created in the same directory as the program if I delete the DAT file its created again there and the program runs but if I close the program and run it again it doesn't. And even when I run it for the first time, then also if I first add two entries and then list all of them it displays them with same string.

And yeah I know it isn't working but the Option 2 isn't working either.
Last edited on
c0defisher (13)
vishesh92 can you explain the need for that pointer to structure tm you have declared called date?
vishesh92 (6)
It ain't required. I was earlier thinking of adding the date.
c0defisher (13)
Had any luck as of yet?
c0defisher (13)
ne555 is right , the string manipulations are the reason why your program is crashing , vishesh use a buffer of enough length , thats probably one way
vishesh92 (6)
Thanks everyone, it worked. I used char arrays instead of strings.
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