Защита ввода с консоли

#include <iostream>
#include <iomanip>
#include <cstdlib>
#define SIZE_OF_ARRAY 10
#define SIZE_OF_GRADS_ARRAY 5
using namespace std;
 
struct student
{
    string name;
    string group;
    int ses[SIZE_OF_GRADS_ARRAY];
};
 
int main()
{
    student *students = new student[SIZE_OF_ARRAY];
    student **students_pointer = new student*[SIZE_OF_ARRAY];
    for(int i = 0; i < SIZE_OF_ARRAY; i++)
    {
        students_pointer[i] = &students[i];
    }
    int average[SIZE_OF_ARRAY];
    for(int i = 0; i < SIZE_OF_ARRAY; i++)
    {
        cout << "Enter name: ";
        cin >> students_pointer[i]->name;
        cout << "Enter group: ";
        cin >> students_pointer[i]->group;
        cout << "Enter grads: ";
        for (int j = 0; j < SIZE_OF_GRADS_ARRAY; j++)
        {
            cin >> students_pointer[i]->ses[j];
        }
        cout << endl;
    }
    for (int i = 0; i < SIZE_OF_ARRAY; i++)
    {
        for (int j = 0; j < SIZE_OF_GRADS_ARRAY; j++)
        {
            average[i] += students_pointer[i]->ses[j];
        }
    }
    for(int i = 0; i < SIZE_OF_ARRAY - 1; i++)
    {
        for(int j = SIZE_OF_ARRAY - 1; j > i; j--)
        {
            if(average[j] < average[j-1])
            {
                swap(students_pointer[j], students_pointer[j-1]);
            }
        }
    }
    cout << "|" << setw(20) << left << "Name";
    cout << "|" << setw(20) << left << "Group";
    cout << "|" << setw(20) << left << "Grades" << endl;
    for (int i = 0; i < SIZE_OF_ARRAY; i++)
    {
        cout << "|" << setw(20) << left << students_pointer[i]->name;
        cout << "|" << setw(20) << left << students_pointer[i]->group;
        cout << "|";
        for (int j = 0; j < SIZE_OF_GRADS_ARRAY; j++)
        {
            cout << students_pointer[i]->ses[j] << " ";
        }
        cout << endl;
    }
    cout << endl << endl;
    bool search_successful = false;
    bool good_grads[SIZE_OF_ARRAY] = {false};
    cout << "Student with good grades:" << endl;
    for (int i = 0; i < SIZE_OF_ARRAY; i++)
    {
        for (int j = 0; j < SIZE_OF_GRADS_ARRAY; j++)
        {
            if (students_pointer[i]->ses[j] == 4 || students_pointer[i]->ses[j] == 5)
            {
                search_successful = true;
                good_grads[i] = true;
            }
        }
        if (good_grads[i])
        {
            cout << "Name: " << students_pointer[i]->name << endl;
            cout << "Group: " << students_pointer[i]->group << endl;
            cout << "Grades: ";
            for (int k = 0; k < SIZE_OF_GRADS_ARRAY; k++)
            {
                cout << students_pointer[i]->ses[k] << " ";
            }
            cout << endl << endl;
        }
    }
    if (search_successful == false)
    {
        cout << endl << "There is no student with such grades" << endl << endl;
    }
    delete[] students_pointer;
    delete[] students;
    system("pause");
    return 0;
}

void clear_buff()
{
    cin.clear();
    while (cin.get() != '\n');
}

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;
 
int main()
{
    const int n=3, m=5;
    struct Student
    {
        string name;
        int group;
        int marks[m];        
    }data[n];     
    
    cout << "Enter data " << n << " students:\n";
    for (int i = 0; i < n; i++)    
    {  
        cout << "Student " << i+1 << ":\n";
        cout << "Name: ";
        getline(cin,data[i].name); 
        cout << "Group: ";
        cin >> data[i].group;
        cout << "Enter " << m << " marks:\n";
        for (int j = 0; j < m; j++)
        {
            cin >> data[i].marks[j];
        }  
        cin.ignore();
    }
    
    cout << "Name             Group     Marks\n";
    for (int i = 0; i < n; i++)
    {
        cout << setw(15) << left << data[i].name << "    ";
        cout << data[i].group << "    ";     
        for (int j = 0; j < m; j++)
        cout << data[i].marks[j] << " "; 
        cout << "\n";
    }
    
system("pause");
return 0;
}

cout << "mark " << j+1 << ": ";

cin.clear();

    do
    {
    cout << "Name: ";
    getline(cin,data[i].name);
    if (data[i].name[0]>='0' && data[i].name[0]<='9' ) cout << "Enter error!!! Repeat please...\n";
    }
    while (data[i].name[0]>='0' && data[i].name[0]<='9' );