Выравнивание вывода

#include <iostream>
#include <fstream>
#include <io.h>
#include <string>
#include <stdlib.h>
using namespace std;
 
#define NUMSIZE 15
#define MARKS 5
 
struct Student
{
    char sName[NUMSIZE];
    char sSurname[NUMSIZE];
    int nAge;
    int MarksAr[MARKS];
    double Average;
};
 
void randGenerateStudent(Student *pStAr, int nSize);
void printGroupStudent1(Student *pStAr, int nSize);
double average(int arr[], int n);
 
int main()
{
    int nSize;
    cout << "enter number of students " << endl;
    cin >> nSize;
    Student *pStAr = new Student[nSize];
    randGenerateStudent(pStAr, nSize);
    printGroupStudent1(pStAr, nSize);
    return 0;
}
 
void randGenerateStudent(Student *pStAr, int nSize){
    string arrayName[10] = { "Vasya", "Petya", "Andrey", "Anton", "Misha", "Dima", "Sasha", "Yura", "Kolya", "Artem" };
    string arraySurname[10] = { "Ivanov", "Petrov", "Kyznecov", "Sidorov", "Smirnov", "Klimchuk", "Kovalchuk", "Doroshenko", "Antonov", "Parhomov" };
    int sum = 0;
 
    for (int i = 0; i < nSize; i++){
        strcpy_s(pStAr[i].sName, arrayName[rand() % 10].c_str());
        strcpy_s(pStAr[i].sSurname, arraySurname[rand() % 10].c_str());
        pStAr[i].nAge = 15 + rand() % 6;
        for (int a = 0; a < MARKS; a++)
            pStAr[i].MarksAr[a] = rand() % 5 + 1;
    }
}
 
double average(int arr[], int n){
    double sum = 0;
    for (int i = 0; i < n; i++)
        sum = sum + arr[i];
    return sum / n;
}
 
void printGroupStudent1(Student *pStAr, int nSize){
    
    cout << "-------------------------------------------------------------------" << endl;
    cout << "| Number |   Name   |   Surname   | Age |   Marks   |   Average   | " << endl;
    cout << "-------------------------------------------------------------------" << endl;
    for (int i = 0; i < nSize; i++)
    {
        cout << i + 1;
        cout << pStAr[i].sName;
        cout << pStAr[i].sSurname;
        cout << pStAr[i].nAge;
        for (int a = 0; a < MARKS; a++)
            cout << "mark-" << a + 1 << pStAr[i].MarksAr[a];
        pStAr[i].Average = average(pStAr[i].MarksAr, MARKS);
        cout << pStAr[i].Average;
    }
}