Solution.cpp

#include <iostream>
#include <sstream>
using namespace std;

class Student {
 private:
  int age;
  string first_name;
  string last_name;
  int standard;

 public:
  int get_age() {
    return age;
  }
  void set_age(int a) {
    age = a;
  }
  string get_first_name () {
    return first_name;
  }
  void set_first_name(string f) {
    first_name = f;
  }
  string get_last_name () {
    return last_name;
  }
  void set_last_name (string l) {
    last_name = l;
  }
  int get_standard () {
    return standard;
  }
  void set_standard (int s) {
    standard = s;
  }
  string to_string() {
    return "" + std::to_string(age) + ',' + first_name + ',' + last_name + ',' + std::to_string(standard);
  }
};

int main() {
  int age, standard;
  string first_name, last_name;

  cin >> age >> first_name >> last_name >> standard;

  Student st;
  st.set_age(age);
  st.set_standard(standard);
  st.set_first_name(first_name);
  st.set_last_name(last_name);

  cout << st.get_age() << "\n";
  cout << st.get_last_name() << ", " << st.get_first_name() << "\n";
  cout << st.get_standard() << "\n";
  cout << "\n";
  cout << st.to_string();

  return 0;
}