class Student{ private: int age, standard; string first_name, last_name; public: void set_age(int age_input){ age = age_input; return; } void set_standard(int standard_input){ standard = standard_input; return; } void set_first_name(string first_name_input){ first_name=first_name_input; } void set_last_name(string last_name_input){ last_name=last_name_input; } int get_age(){return age;} int get_standard(){return standard;} string get_first_name() {return first_name;} string get_last_name() {return last_name;} string to_string(){ return std::to_string(age) + "," + first_name + "," + last_name + "," + std::to_string(standard); }

Here is Class problem solution in C++ - https://programmingoneonone.com/hackerrank-class-solution-in-cpp.html

include

include

using namespace std;

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

public: void input() { cin >> age >> first_name >> last_name >> standard; }

void answer() {
    cout<<age<<endl;
    cout<<last_name<<", "<<first_name<<endl;
    cout<<standard<<endl<<endl;
    cout << age << "," << first_name << "," << last_name << "," << standard;
}

};

int main() { Student st; st.input(); st.answer(); return 0; }

Here is a simplified version I have Taken just Two function input and answers where everything is easy....

include

include

using namespace std;

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

public: void input() { cin >> age >> first_name >> last_name >> standard; }

void answer() {
    cout<<age<<endl;
    cout<<last_name<<", "<<first_name<<endl;
    cout<<standard<<endl<<endl;
    cout << age << "," << first_name << "," << last_name << "," << standard;
}

};

int main() { Student st; st.input(); st.answer(); return 0; }