#include <stdio.h>
#include <stdlib.h>

typedef struct Student
{
    int matrikelnummer;
    char *vorname;
    char *nachname;
} Student;

int print_student(Student *person)
{
    printf("%s, %s, %d", person->vorname, person->nachname, person->matrikelnummer);
    return 0;
}

int main(void)
{
    Student *person = malloc(sizeof *person);

    person->vorname = "Max";
    person->nachname = "Mustermann";
    person->matrikelnummer =123456;
    print_student(person);

    free(person);

    return 0;
}