การบ้าน Structure (การลงทะเบียนเรียน)

#include "stdio.h"
struct time
{
int day;
int month;
int year;
};
struct Regis
{
char name[30];
char lastname[30];
char id[15];
char subject_name[50];
char subject_code[10];
struct time date;
}details;
void input_data()
{
printf("Register\n");
printf("Name : ");
scanf("%s",&details.name);
printf("Lastname : ");
scanf("%s",&details.lastname);
printf("id = ");
scanf("%s",&details.id);
printf("Subject Name : ");
scanf("%s",&details.subject_name);
printf("Subject Code : ");
scanf("%s",&details.subject_code);
printf("Day-Month-Year : ");
scanf("%d-%d-%d",&details.date.day,&details.date.month,&details.date.year);
}
void show_data()
{
printf("\nInformation Regis\n");
printf("Your Name : %s\n",details.name);
printf("Your Lastname : %s\n",details.lastname);
printf("Your ID : %s\n",details.id);
printf("Subject Name : %s\n",details.subject_name);
printf("Subject Code : %s\n",details.subject_code);
printf("Date : %d-%d-%d",details.date.day,details.date.month,details.date.year);
}
main()
{
input_data();
show_data();
return (0);
}