Array input to one class variable c++ - c++

Question

I need to create a class of Students where I need to store their name, surname and subjects that they have in uni. How do I need to assign different subjects to different students? User should input it from console. What my class and input should look like? Heres is the code I have so far For example: there are two students Mark Jacobs and John Johny. Mark has 3 subjects: Math, Physics, Geography and John only has 2 Math and Economy.
#include <iostream>
using namespace std;
class Student{
private:
string name;
string surname;
int courseNo;
string subjects[100];
public:
Student(string name = "empty", string surname = "empty")
{
this->name = name + surname;
}
~Student(){
}
void setFullName(string name, string surname){
this->name = name;
this->surname = surname;
}
string getFullName(){
return name + " " + surname;
}
void setSubject(string subjects[100]){
this->subjects[90] = subjects[90];
}
string getSubject(){
return subjects[90];
}
string toString() const
{
return "Studentas: " + this->name;
}
};
int main() {
int number_of_students;
int number_of_subjects = 0;
int choice;
string subjects[90];
string name;
string surname;
cout << "Enter number of students: ";
cin >> number_of_students;
Student Studentas[number_of_students];
cout << "Enter " << number_of_students << " students names and surnames: " << endl;
for (int i = 0; i < number_of_students; i++) {
cin >> name >> surname;
Studentas[i].setFullName(name, surname);
}
for (int i = 0; i < number_of_students; i++) {
cout << i+1 << " Student: " << Studentas[i].getFullName() << endl;
}
cout << "Choose which students subjects you want to enter: ";
cin >> choice;
if(choice == 1){
cout << "Enter " << Studentas[choice-1].getFullName() << " number of subjects: ";
cin >> number_of_subjects;
for (int i = 0; i < number_of_subjects; i++) {
cin >> subjects[i];
Studentas[choice-1].setSubject(subjects);
}
cout << "Studying subjects are: " << endl;
for(int i = 0; i < number_of_subjects; i++){
cout << Studentas[choice-1].getSubject() << endl;
}
}
return 0;
}

Answer 1

I have taken your code changed a little bit, I hope this is what you are looking for
Code:
#include <iostream>
#include <vector>
using namespace std;
class Student {
private:
string name_;
string surname_;
int courseNo_;
std::vector<string> subject_list_;
public:
Student(string name = "empty", string surname = "empty")
{
name_ = name + surname;
}
void setFullName(string name, string surname) {
name_ = name;
surname_ = surname;
}
string getFullName() {
return name_ + " " + surname_;
}
void setSubject(string subject) {
subject_list_.push_back(subject);
}
const std::vector<string>& getSubjects() {
return subject_list_;
}
string toString() const
{
return "Student as: " + name_;
}
};
int main() {
std::vector<Student> student_list;
int number_of_students;
int number_of_subjects = 0;
int choice;
string subject;
string name;
string surname;
cout << "Enter number of students: ";
cin >> number_of_students;
cout << "Enter " << number_of_students << " students names and surnames: " << endl;
for (int i = 0; i < number_of_students; i++) {
cin >> name >> surname;
student_list.push_back(Student(name, surname));
}
int i = 1;
for (auto student : student_list) {
cout << i++ << " Student: " << student.getFullName() << endl;
}
cout << "Choose which students subjects you want to enter: ";
cin >> choice;
if (choice <= number_of_students) {
choice -= 1;
cout << "Enter " << student_list[choice].getFullName() << " number of subjects: ";
cin >> number_of_subjects;
for (int i = 0; i < number_of_subjects; i++) {
cin >> subject;
student_list[choice].setSubject(subject);
}
cout << "Studying subjects are: " << endl;
const auto& subject_list = student_list[choice].getSubjects();
for (auto& subject : subject_list){
cout << subject << endl;
}
}
return 0;
}