[C++] 성적 처리 프로그램 동적바인딩

#include <iostream>
 
using namespace std;
 
void input(char *name, int *score, int num);
void oper(int *score, float *avg, int num);
void output(char *name, int *score, float *avg, int num);
 
int main() {
    //name kor math eng average
    int num;
    char *name;
    int *score;
    float *avg;
 
    cout << "몇 사람 :";
    cin >> num;
 
    name = new char[num * 10];
    score = new int[num * 4];
    avg = new float[num];
 
    input(name, score, num);
    oper(score, avg, num);
    output(name, score, avg, num);
 
    delete[]name;
    delete[]score;
    delete[]avg;
}
void input(char *name, int *score, int num) {
    int i, j;
    for (i = 0; i < num; i++) {
        cout << "Name intput :";
        cin >> name;
        for (j = 0; j < 3; j++)
        {
            if (j == 0)    cout << "Kor input :";
            else if (j == 1) cout << "Eng input :";
            else cout << "Math input :";
 
            cin >> score[j];
        }
        name += 10;
        score += 4;
    }
}
void oper(int *score, float *avg, int num) {
    int i, j;
    for (j = 0; j < num; j++){
        *(score+3) = 0;
        for ( i = 0; i < 3; i++)
        {
            *(score+3) += *(score+i);
        }
        *avg = *(score+3) / 3.f;
        score += 4;
        avg++;
    }
}
void output(char *name, int *score, float *avg, int num) {
    int i, j;
    system ("cls");
    for ( i = 0; i < num; i++)
    {
        cout << name << "\t ";
        for ( j = 0; j < 4; j++)
        {
            cout << *(score+j)<<"\t ";
        }
            cout << *avg<<endl;
            name += 10;
            score += 4;
            avg++;
    }
}