struktur data

#include <stdio.h>
main()
{
char Nama[20];
                 char NIM[11];
                 char Konsentrasi[15];
char Semester[2];
printf("whats up!!!!!\n");
printf("Nama: ");
                 scanf("%s", Nama);
                 printf("NIM: ");
  scanf("%s", NIM);
                 printf("Konsentrasi (Komputer/Telekomunikasi/Elektronika/Energy): ");
                 scanf("%s", Konsentrasi);
                 printf("Semester: ");
                 scanf("%s", Semester);
/* ("\ n \ n ================================== ======= \ n ")*/
/* ("\ t \ triyono \ n \ http://triyonosiak.blogspot.com/           \ n")*/
/* ("\ n \ n ================================== ======= \ n ")*/
printf("\n");
                                      printf("\n");
printf("\n");
                                      printf("\n");
printf("********************\n");
                                      printf("Selamat datang di laboratorium komputer\n");
  printf("UIN Sultan Syarif Kasim Riau\n");
printf("Nama: %s \n", Nama);
printf("NIM: %s \n", NIM);
printf("Konsentrasi: %s \n", Konsentrasi);
printf("Semester: %s \n", Semester);
printf("********************\n");
}