How to show up student's score? (C++)

[Seehoon Jang]

       #include <iostream>
       #include <stdlib.h>
       using namespace std;

    class Sungjuk
    {
     private:
    char* name[30];
    int korean;
    int english;
    int math;

    int sum = 0;
    double average;

    public:
    Sungjuk()
    {
	for (int i = 0; i < 30; i++)
		name[i] = new char[12 * sizeof(char)];
    }

    void setName(char* name);
    char* getName();

    void setKorean(int kor);
    int getKorean();

    void setEnglish(int eng);
    int getEnglish();

    void setMath(int mat);
    int getMath();

    void compute(int korean, int english, int math)
    {
	sum = korean + english + math;
	average = sum / 3;
    }



    void output()
    {
	cout <<"Total: "<< sum << endl;
	cout << "Average: " << average << endl;

	if (average >= 90)
		cout << "Grade: A" << endl << "Result: Excellent..!" << endl;
	else if (average >= 80 && average < 90)
		cout << "Grade: B" << endl << "Result: Good..!" << endl;
	else if (average >= 70 && average < 80)
		cout << "Grade: C" << endl << "Result: Good..!" << endl;
	else if (average >= 60 && average < 70)
		cout << "Grade: D" << endl << "Result: Bad..!" << endl;
	else
		cout << "F : Bad..!" << endl;
    }

    ~Sungjuk()
    {
	for (int i = 0; i < 4; i++)
		delete[] name[i];
    }
    };



    void Sungjuk::setName(char* name)
    {
    this->name = name;
    }
    char* Sungjuk::getName()
    {
    return this->name;
    }

    void Sungjuk::setKorean(int kor)
    {
    this->korean = kor;
    }
    int Sungjuk::getKorean()
    {
    return this->korean;
    }

    void Sungjuk::setEnglish(int eng)
    {
    this->english = eng;
    }
    int Sungjuk::getEnglish()
    {
    return this->english;
    }

    void Sungjuk::setMath(int mat)
    {
    this->math = mat;
    }
    int Sungjuk::getMath()
    {
    return this->math;
    }




    int main()
    {
    Sungjuk obj;

    int kor, eng, mat, sum = 0;
    double avg = 0;

    cout << "input name: ";
    cin >> name;
    cout << "input korean, english, math: ";
    cin >> kor >> eng >> mat;

    obj.compute(kor, eng, mat);
    obj.output();

    system("PAUSE");
    return 0;
    }

[avan]

Hey @Seehoon-Jang I am confused on what is happening here. What is missing/not working? What is working?