// Demo: update name 
//       name is entered in the main program
//       and updated using a put_name(), a member function of Student
#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
class Student {
  private:
    string id,name,class_no;
  public:
    Student(){ id="id00";
               name="noname";
               class_no="00";
               } // initial values given for very student
    void show() {
     cout << left << setw(5) << id <<
             setw(15) << name << class_no << endl;
    }
    void put_name(string xname); // enter name only
};
void Student::put_name(string xname) {  // updates name
   name = xname;
}
void main() {
 Student x,y; // create 2 students x and y
 string nm;
 x.show();   //  display student x"id00  noname  00"

 cout << "enter name ";
 getline(cin,nm); // enter "JOHN"
 x.put_name(nm);    //  update name with nm;

 x.show();          //  display "id00 JOHN 00"  for student x,
                    //  name changed to JOHN

 x.put_name("MUTHU");  // update name with MUTHU
 x.show();           // display "idoo MUTHU 00"
}
/* Output
id00 noname 00
enter name JOHN
id00 JOHN   00
id00 MUTHU  00
*/