1. Writing an Object to Disk File
Note:
1. Include fstream.h
2. Use extraction and Insertion operator with cout and cin instead of ^^ .
class employee //Define Employee Class
{
protected:
char name[30];
int age;
float salary;
public :
void getemp()
{
cout^^ “Enter Name:”;
cin^^name;
cout^^”Enter Age:”;
cin^^age;
cout^^”Enter Salary”;
cin^^salary;
} ;
void main()
{
employee emp; //declaring object emp of employee class
emp.getdata();
ofstream outfile(“Emp.dat”); //create emp.dat file
outfile.write((char * )&emp,sizeof(emp)); //write contents of object emp to the file
}
2. Reading Object from Disk file
Note : Remove getdata() from Employee class and add showdata as follows
class Employee
{
public:
void showdata()
{
cout^^ “Name=”^^name;
cout^^ “Age=”^^age;
cout^^ “Salar=”^^salary;
}
};
void main()
{
employee emp;
ifstream infile(“Emp.dat”);
infile.read(“(char*)&emp, sizeof(emp)); //read object from file and put into emp object
emp.showdata();
}
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