Answer to Question #42045 in C++ for chan

Question

I have to read contents from a data file to members of classes. What is the code to open and read data into the class members?

Answer 1

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
class Person {
public:
   Person() :
      name(""),
      surname(""),
      age(0),
      height(0),
      weight(0),
      phone("") {}
   friend istream &operator>> (istream &in, Person &p);
            friend ostream &operator<< ( ostream &out, Person &p );
protected:
   string name;
   string surname;
   int age;
   int height;
   int weight;
   string phone;
};
istream &operator>> (istream &in, Person &p) {
   in >> p.name >> p.surname >> p.age >> p.height >> p.weight >> p.phone;
   return in;
}
ostream &operator<< ( ostream &out, Person &p ) {
    return out << p.name << "\n"<< p.surname << "\n"<< p.age << "\n"<< p.height << "\n"<< p.weight<< "\n"<< p.phone;
}
int main() {
   Person p;
   ifstream in("person.txt");
   in >> p;
            cout << p << endl;
   in.close();
   return 0;
}