Code was made in java, converted to C++ but how can I apply what the "//'s" say to add to make the program work ?

#include <string>
#include <vector>
#include <iostream>
	{
	class Student
	{
	public:
		std::wstring studentName;
		int studentNum = 0;
		std::wstring SSN;
		double GPA = 0;
		double totalCredit = 0;
		   Student(const std::wstring &studentName, int studentNum, const std::wstring &SSN, double GPA, double totalCredit);
		virtual bool isequal(Student *student2);
		virtual void addGpa(double amount);
	};
}
{
	class Course
	{
	public:
		std::wstring courseName;
		int courseNum = 0;
		double creditHour = 0;
		std::vector<student*> array;
		int counter = 0;
		Course(const std::wstring &courseName, int courseNum, double creditHour, int registeringStudents);
		virtual void addStudent(Student *student);
		virtual bool validate(Student *student);
		virtual Student *getStudentByStno(int studentNum);
		virtual std::vector<student*> getStudentByGPA(double gpa);
		virtual double findMaxGpa();
	};
	;
}
{
	class main
	{
		public:
			static void main(std::vector<std::wstring> &args);
	};
}
//Helper class added by Java to C++ Converter:

#include <string>
#include <vector>

int main(int argc, char **argv)
{
    std::vector<std::wstring> args(argv + 1, argv + argc);
    javaapplication4::main::main(args);
}
//.cpp file code:

#include "snippet.h"
{
	Student::Student(const std::wstring &studentName, int studentNum, const std::wstring &SSN, double GPA, double totalCredit)
	{
	 this->studentName = studentName;
	 this->studentNum = studentNum;
	 this->SSN = SSN;
	 this->GPA = GPA;
	 this->totalCredit = totalCredit;
	}
	bool Student::isequal(Student *student2)
	{
		if (this->GPA == student2->GPA && this->totalCredit == student2->totalCredit)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	void Student::addGpa(double amount)
	{
		if (amount + this->GPA < 4.0 && amount + this->GPA > 0.35)
		{
			this->GPA += amount;
		}
		else
		{
			std::wcout << L"Result is more then 4.0 or less then 0.35... please try a different amount" << std::endl;
		}
	}
}
{
	using ArrayList = java::util::ArrayList;

	Course::Course(const std::wstring &courseName, int courseNum, double creditHour, int registeringStudents)
	{
		this->courseName = courseName;
		this->courseNum = courseNum;
		this->creditHour = creditHour;
		this->array = std::vector<student*>(registeringStudents);
	}
	void Course::addStudent(Student *student)
	{
		if (this->array.size() == counter)
		{
			std::wcout << L"Failed... course is full" << std::endl;
		}
		else if (validate(student))
		{
			this->array[counter] = student;
			counter++;
			std::wcout << L"Success in adding student" << std::endl;
		}
		else
		{
			std::wcout << L"student number already registered" << std::endl;
		}
	}
	bool Course::validate(Student *student)
	{
		for (int i = 0; i < this->array.size(); i++)
		{
			if (array[i] == nullptr)
			{
				continue;
			}

			if (student->studentNum == this->array[i]->studentNum)
			{
				return false;
			}
		}
		return true;
	}
	Student *Course::getStudentByStno(int studentNum)
	{
		for (int i = 0; i < array.size(); i++)
		{
			if (studentNum == array[i]->studentNum)
			{
				std::wcout << L"found and returned" << std::endl;
				return array[i];
			}
		}
		 std::wcout << L"not found.. returned null" << std::endl;
		return nullptr;
	}
	std::vector<student*> Course::getStudentByGPA(double gpa)
	{
		std::vector<student*> temp(counter);
		int tempo = 0;
		for (int i = 0; i < array.size(); i++)
		{
			if (array[i] == nullptr)
			{
				continue;
			}
			if (gpa == array[i]->GPA)
			{
				temp[tempo] = array[i];
				tempo++;
			}
		}
		return temp;
	}
	double Course::findMaxGpa()
	{
		double max = 0;
		for (int i = 0; i < array.size(); i++)
		{
			if (array[i] == nullptr)
			{
				continue;
			}
			if (array[i]->GPA > max)
			{
				max = array[i]->GPA;
			}
		}
		return max;
	}
}
{
	void main::main(std::vector<std::wstring> &args)
	{
	Student *student1 = new Student(L"Saif", 01, L"02323123", 2.0, 3.0);
	Student *student2 = new Student(L"abdulla", 02, L"1231232", 1.0, 3.0);
	std::wcout << student1->isequal(student2) << std::endl;
	Student *student3 = new Student(L"hazem", 01, L"02323123", 3.0, 3.0);
	Student *student4 = new Student(L"khalid", 04, L"34534535", 3.0, 3.0);

	std::wcout << student3->isequal(student4) << std::endl;
			 Course *science = new Course(L"science", 01, 3.0, 10);
			 science->addStudent(student1);
			 science->addStudent(student2);
			 science->addStudent(student3);
			 science->addStudent(student4);

		std::wcout << L"student 1 gpa is: " << student1->GPA << std::endl;
		student1->addGpa(5.0);
		std::wcout << L"student 1 gpa is: " << student1->GPA << std::endl;
		student1->addGpa(0.5);
		std::wcout << L"student 1 gpa is: " << student1->GPA << std::endl;

		std::wcout << L"The pointer for student 1 is : " << student1 << std::endl;
		std::wcout << science->getStudentByStno(01) << std::endl;

	   std::vector<student*> array2 = science->getStudentByGPA(3.0);
		std::wcout << array2[0]->studentName << std::endl;

		  std::wcout << science->findMaxGpa() << std::endl;

		  Student *student5 = new Student(L"smartest", 05, L"24234234", 4.0, 3.0);
		  science->addStudent(student5);

		  std::wcout << science->findMaxGpa() << std::endl;

//JAVA TO C++ CONVERTER TODO TASK: A 'delete student5' statement was not added since student5 was passed to a method or constructor. Handle memory management manually.
				delete science;
//JAVA TO C++ CONVERTER TODO TASK: A 'delete student4' statement was not added since student4 was passed to a method or constructor. Handle memory management manually.
//JAVA TO C++ CONVERTER TODO TASK: A 'delete student3' statement was not added since student3 was passed to a method or constructor. Handle memory management manually.
//JAVA TO C++ CONVERTER TODO TASK: A 'delete student2' statement was not added since student2 was passed to a method or constructor. Handle memory management manually.
//JAVA TO C++ CONVERTER TODO TASK: A 'delete student1' statement was not added since student1 was passed to a method or constructor. Handle memory management manually.
	}
}