int main()
{
    // now declare three variables as type student
    StudentT s1, s2, s3;
    getStudent(&s1);
    getStudent(&s2);
    displayStudent(&s1);
    displayStudent(&s2);
    return 0;
}
void pratica25exercise7(int argc, const char * argv[]) {    
    printf("\n\nExercise 7:\n");
    
    struct student s = promptUserForStudent();
    displayStudent(s);
    
    printf("\n\nThe students average mark is %f.",getStudentsAverageMark(s));
    
    printf("\n\nThe students passed: \n");
    struct attendances passed = getPassedAttendences(s.attendances);
    for(int i=0; i<passed.size; i++) {
        printf("    %s\n",passed.items[i].subject);
    }
    if(passed.size==0) {
        printf("    none course\n");
    }
}