[Zabra]

My Old project ... Go through it to refresh file handling ..

This project uses the concept of data file handling and other concepts of “Object Oriented Programming”. Its Aim is to maintain criminal and staff records of Central Bureau Of Investigation. It stores basic data like Name, age, blood group, offense, reward etc. of criminals and personal information of concerned officer or staff members. This project helps to store data in a very compact and easily accessible way, instead of storing data in huge bulks of files.

Code:

#include <iostream.h>
#include <fstream.h>
#include <stdio.h>
#include<string.h>
class crim_rec
{
    char name[20], sex, fathr_name[20], addrs[25], offense[20], blood[5], dob[9];
    int crim_code, reward;
    void disp();
public:
    void get();
    void wtf();
    void rff();
    void search();
    void del();
    void mod();
}c;
void crim_rec::get()
{
    puts("\nEnter name of criminal:");
    gets(name);
    puts("\nsex (m/f):");
    cin>>sex;
    puts("\nEnter date of birth:");
    gets(dob);
    puts("Enter blood group (Ap/An/Bp/Bn/ABp/ABn/Op/On:");
    gets(blood);
    puts("\nenter father's name:");
    gets(fathr_name);
    puts("enter address:");
    gets(addrs);
    puts("\nEnter crime commited:");
    gets(offense);
    puts("\nEnter reward on criminal:");
    cin>>reward;
}
void crim_rec::disp()
{
    cout<<"The record of criminal:\n";
    cout<<"\nName of criminal: "<<name;
    cout<<"\nsex: "<<sex;
    cout<<"\nDOB: "<<dob;
    cout<<"\nBlood Group: "<<blood;
    cout<<"\nFather's name: "<<fathr_name;
    cout<<"\nAddress: "<<addrs;
    cout<<"\nCrime: "<<offense;
    cout<<"\nReward: "<<reward;
    
}
void crim_rec::wtf()
{
    ofstream ofile;
    ofile.open("CBI", ios::app);
    get();
    ofile.write((char*)&c, sizeof(c));
    ofile.close();
}
void crim_rec::rff()
{
    ifstream ifile;
    ifile.open("CBI");
    ifile.seekg(0, ios::beg);
    ifile.read((char*)&c, sizeof(c));
    while(ifile)
    {
        disp();
        ifile.read ((char*)&c, sizeof(c));
    }
    ifile.close();
}
void crim_rec::search()
{
    char m[20];
    ifstream ifile("CBI");
    puts("Enter name of criminal which has to be searched");
    gets(m);
    ifile.seekg (0, ios::beg);
    ifile.read((char*)&c, sizeof(c));
    while(ifile)
    {
        if (strcmpi(m, name)==0)
            disp();
            ifile.read((char*)&c, sizeof(c));
    }
    ifile.close();
}
void crim_rec::del()
{
    char b[20];
    ifstream ifile;
    ifile.open("CBI", ios::app);
    ofstream ofile;
    ofile.open("new", ios::app);
    puts("Enter the name of the criminal whose records you want to del");
    gets(b);
    ifile.seekg (0, ios::beg);
    ifile.read((char*)&c, sizeof(c));
    while(ifile)
    {
        if (strcmpi(b, name))
            ofile.write((char*)&c, sizeof(c));
        ifile.read((char*)&c, sizeof(c));
    }
    ifile.close();
    ofile.close();
    remove ("CBI");
    rename("new", "CBI");
}
void crim_rec::mod()
{
    char d[20];
    int p;
    puts("\nEnter name of criminal whose record you want to modify\n");
    gets(d);
    fstream f;
    f.open("CBI", ios::in|ios::out);
    f.seekg(0, ios::beg);
    f.read((char*)&c, sizeof(c));
    int a=f.tellg();
    while(! f.eof())
    {
        if (!strcmpi(d, name))
        {
            puts("\nPress 1 to change name\nPress 2 to change sex\nPress 3 to change date of birth\nPress 4 to change blood group\nPress 5 to change father's name\nPress 6 to change address\nPress 7 to change crime committed\nPress 8 to change reward on criminal\n");
            cin>>p;
            switch(p)
            {
            case 1:
                gets(name);
                break;
            case 2:
                cin>>sex;
                break;
            case 3:
                gets(dob);
                break;
            case 4:
                gets(blood);
                break;
            case 5:
                gets(fathr_name);
                break;
            case 6:
                gets(addrs);
                break;
            case 7:
                gets(offense);
                break;
            case 8:
                cin>>reward;
                break;
            }
            f.seekg(a-sizeof(c), ios::beg);
            f.write((char*)&c, sizeof(c));
        }
        f.read((char*)&c, sizeof(c));
        a=f.tellg();
    }
    f.close();
}
void main ()
{
    int ch;
    char choice;
    do
    {
    cout<<"\t Central Bureau of Investigation";
    cout<<"\n ********************************************";
    cout<<"\n\n *  1. View criminal details                 *";
    cout<<"\n\n *  2. Add new criminal details               *";
    cout<<"\n\n *  3. Search a criminal record              *";
    cout<<"\n\n *  4. Delete a criminal record              *";
    cout<<"\n\n *  5. Modify a criminal record              *";
    cout<<"\n ********************************************";
    cout<<"\n\n Enter your choice: ";
    cin>>ch;


    switch(ch)
    {
    case 1:
        
             c.rff();    
        break;
    case 2:
        
            c.wtf();
            
            break;
    case 3:
            c.search();
            break;
    case 4:
        c.del();
        break;
    case 5:
        c.mod();
        break;
    default:
        {
        cout<<"\nerror!";
        }
        break;
    }
    cout<<"\ncontinue? (y/n)\n";
    cin>>choice;
    }while(choice=='y');
    cout<<"\nGood bye";
}

[Lenalee]

So do that saves the record?

[Zabra]

Yes it saves a record ...
And You can recall .. modify .. traverse the saved data , Again..any time you want....:epic: