Overloading Stream Operators using Friend function

The class istream uses the predefined stream cin that can be used to read data from the standard input device. The extraction operator >> is used for performing input operations in the iostream library. The insertion operator << is used for performing output operations in the iostream library.

Sample Program

#include <iostream.h>

class info

{

private:

int rno;

char *name;

float tot;

public:

friend istream & operator>>(istream &in, info & obj)

{

in>>obj.rno;

in>>obj.name;

in>>obj.tot;

}

friend ostream & operator<<(ostream &out, info &obj);

};

ostream & operator<<(ostream &out, info & obj)

{

out<<obj.rno;

out<<obj.name;

out<<obj.tot;

}

void main()

{

info A;

cout<<”Enter the Object Contents”;

cin>>A; // similar to cin.operator>>(A)

cout<<”Given Values are”;

cout<<A; // similar to cout.operator<<(A)

}