C++ Program to Maintain House Records using File Handling

Below is the source code for C++ Program to Maintain House Records using File Handling which is successfully compiled and run on Windows System to produce desired output as shown below :

SOURCE CODE : :

/*  C++ Program to Maintain House Records using File Handling */

#include<fstream>
#include<iostream>
#include<string.h>
#include<stdio.h>
using namespace std;

int opt;

class housing
{
  int hno,income;
  char name[20],type[20];
  public:
      void assign()
      {
           if(income<15000)
           strcpy(type,"LIG");
           else if(income>=15000)
           strcpy(type,"MIG");
           else if(income>=25000)
           strcpy(type,"HIG");
      }

      void input()
      {
           cout<<"\n Enter House Number: ";
           cin>>hno;
           cout<<"\n House Name: ";
           cin>>name;
           cout<<"\n Annual Income: ";
           cin>>income;
           assign();
      }

       void output()
      {
            cout<<"House Number: "<<hno<<"\n"<<"House Name: "<<name<<"\n"<<"Annual                                           Income: "<<income<<"\n"<<"Type: "<<type;
      }

      int retno()
      {
            return hno;
      }
};

int main()
{
     housing h,h1;
     fstream f;
     int hono;

     while(true)
     {
         cout<<"\n 1: Add Record"<<"\n 2: Modify Record"<<"\n 3: Display Records"<<"\n 4: Exit\n"<<endl;
         cin>>opt;

         if(opt==1)
         {
              char ch='y';
              f.open("C:\\Users\\acer\\Documents\\file4.txt",ios::out|ios::binary|ios::app);
              while(ch=='y')
              {
                   cout<<"\n Enter Details: ";
                   h.input();
                   f.write((char*)&h,sizeof(h));
                   cout<<"\n Want to Enter More? y/n: "<<endl;
                   cin>>ch;
              }
             f.close();
         }

         if(opt==2)
         {
              cout<<"\n Enter House No of Record to be modified: ";
              cin>>hono;
              f.open("C:\\Users\\acer\\Documents\\file4.txt",ios::in|ios::out|ios::binary|ios::ate);
              f.seekg(0);

              while(f.read((char*)&h,sizeof(h)))
              {
                   if(h.retno()==hono)
                   {
                        cout<<"\n New Value: ";
                        h1.input();
                        f.seekp(-sizeof(h),ios::cur);
                        f.write((char*)&h1,sizeof(h1));
                   }
              }
             f.close();
         }

         if(opt==3)
         {
              f.open("C:\\Users\\acer\\Documents\\file4.txt",ios::in|ios::binary);
              f.seekg(0);

              while(f.read((char*)&h,sizeof(h)))
              h.output();

              f.close();
         }

         if(opt==4)
             exit(0);

        cout<<"\nPress any key to continue...... ";

    }

    return 0;
}

OUTPUT  : :

/*  C++ Program to Maintain House Records using File Handling */

 1: Add Record
 2: Modify Record
 3: Display Records
 4: Exit

1

 Enter Details:
 Enter House Number: 1

 House Name: abc

 Annual Income: 10000

 Want to Enter More? y/n:
y

 Enter Details:
 Enter House Number: 2

 House Name: xyz

 Annual Income: 20000

 Want to Enter More? y/n:
y

 Enter Details:
 Enter House Number: 3

 House Name: CodezClub

 Annual Income: 50000

 Want to Enter More? y/n:
n

Press any key to continue......
 1: Add Record
 2: Modify Record
 3: Display Records
 4: Exit

3
House Number: 1
House Name: abc
Annual                                           Income: 10000
Type: LIGHouse Number: 2
House Name: xyz
Annual                                           Income: 20000
Type: MIGHouse Number: 3
House Name: CodezClub
Annual                                           Income: 50000
Type: MIG
Press any key to continue......
 1: Add Record
 2: Modify Record
 3: Display Records
 4: Exit

4

Process returned 0

Above is the source code for C++ Program to Maintain House Records using File Handling which is successfully compiled and run on Windows System.The Output of the program is shown above .