Как вывести элементы типа string из структуры?

#include "stdafx.h"
#include "iostream"
#include "conio.h"
 
using namespace std;
 
struct Students
{
    string name, secondname, sername, sity;
    int t1, t2, t3;
};
void display(Students *struct_arr,int n)
{
    for (int i = 0; i < n; i++)
        //cout << "Foo:\t" << struct_arr.t1 << "\n" << "Bar:\t" << struct_arr.t2 << "\n";
    {
        printf("sum[%d] = %s  \n", i, struct_arr[i].name);
        printf("sum[%d] = %s  \n", i, struct_arr[i].secondname);
        printf("sum[%d] = %d %d %d \n", i, struct_arr[i].t1, struct_arr[i].t2, struct_arr[i].t3);
    }
    
}
void main()
{
    Students test[] = { { "yura", "Vital", "Okunets", "Lviv", 4, 5, 6 },
    { "petr", "qwer", "dumchuk", "Lviv", 2, 3, 4 }
};
    display(test, 2);
    system("pause");
}

#include "stdafx.h"
#include "iostream"
#include "conio.h"
 
using namespace std;
 
struct Students
{
    char name[30];
    char secondname[30];
    char sername[30];
    char sity[30];
    int t1, t2, t3;
};
 
void display(Students *struct_arr,int n)
{
    for (int i = 0; i<n; ++i) {
        if (struct_arr[i].name[0]) {
            printf("sum[%d] = %s  \n", i, struct_arr[i].name);
            printf("sum[%d] = %s  \n", i, struct_arr[i].secondname);
            printf("sum[%d] = %f %f %f \n", i, struct_arr[i].t1, struct_arr[i].t2, struct_arr[i].t3);
        }
    }
    
}
 
void main()
{
    Students test[] = { { "yura", "Vital", "Okunets", "Lviv", 4, 5, 6 },
    { "petr", "qwer", "dumchuk", "Lviv", 2, 3, 4 }
};
    display(test,2);
    system("pause");
}

using namespace std;