Write
a C++ program to create a class Department which contains data members as
Dept_Id, Dept_Name, H.O.D., Number_Of_staff. Write necessary member functions
to
i.Accept
details from user for ‘n’ departments and write it in a file “Dept.txt”.
ii.Display
details of department from a file.
iii.Count
the number of objects stored in a file.
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
class
dept
{
int
did;
char
dname[20];
char
hod[15];
int
nos;
public:
void
accept()
{
cout<<"Enter
the department id-";
cin>>did;
cout<<"\nEnter
the department name-";
cin>>dname;
cout<<"\nEnter
the hod-";
cin>>hod;
cout<<"\nEnter
the no. of staff-";
cin>>nos;
}
void
display()
{
cout<<"\nThe department is- "<<did;
cout<<"\n
The department name is- "<<dname;
cout<<"\nThe
Head of department is- "<<hod;
cout<<"\nThe
number of staff is- "<<nos;
}
};
void
main()
{
dept
d[5];
int
n,i;
clrscr();
fstream
file;
file.open("dept.txt",
ios::in|ios::out);
cout<<"\nEnter
the no. of records you want to enter-";
cin>>n;
for(i=0;
i<n; i++)
{
d[i].accept();
file.write((char*)
& d[i], sizeof(d[i]));
}
cout<<"\nDetails
of department from the file-: ";
for(i=0;
i<n; i++)
{
file.read((char*)
&d[i],sizeof(d[i]));
d[i].display();
}
file.close();
getch();
}
