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

typedef struct schueler {
    char name[50];
    char vorname[50];
    int note;
    struct schueler *next
}Schueler;


void einfuegen (Schueler *head, char *name, char *vorname, int note ){

    Schueler* current = head;

    Schueler *neu = malloc(sizeof(Schueler));


    while(current->next != NULL) {
        current = current->next;
    }

    strcpy(neu->name, name);
    strcpy(neu->vorname, vorname);
    neu->note = note;
    neu->next = NULL;

    current -> next = neu;

}

void printList(Schueler *head){
    Schueler* current = head -> next;
    int counter = 1;

    while(current->next != NULL) {
        printf("%d. %s \t\t%s \t\t%d \n",counter, current -> name, current -> vorname, current -> note);
        counter++;
        current = current->next;
    }
        printf("%d. %s \t\t%s \t\t%d \n",counter, current -> name,current -> vorname, current -> note);
}

void durch(int *spiegel) {

    for (int i = 1; i <= 6 ; ++i) {
        printf("Note %d:", i);


        for (int j = 0; j < spiegel[i-1]; ++j) {
            printf("*");
        }

        printf("\n");
    }


}

int main (){
    Schueler anker;
    char name[50], vorname[50], note_eingabe[10];
    int note, counter = 1, temp = 0, spiegel[6] = {};
    double durchschnitt = 0;

    anker.next= NULL;

     do {
        printf("----Eingabe des %d.Schuelers----\n", counter);
        printf("Name:");
        fgets(name, sizeof(name), stdin);

         if(strcmp(name, "\n") == 0){
            break;
        }
         name[strcspn(name, "\n")] = '\0';

        printf("Vorname:");
        fgets(vorname, sizeof(vorname), stdin);
        vorname[strcspn(vorname, "\n")] = '\0';


         printf("Note:");
         fgets(note_eingabe, sizeof(note_eingabe), stdin);
         note_eingabe[strcspn(note_eingabe, "\n")] = '\0';
         note = atoi(note_eingabe);

         switch (note) {
             case 1:
                 spiegel[0] += 1;
                 break;
             case 2:
                 spiegel[1] +=1;
                 break;
             case 3:
                 spiegel[2] += 1;
                 break;
             case 4:
                 spiegel[3] += 1;
                 break;
             case 5:
                 spiegel[4] += 1;
                 break;
             case 6:
                 spiegel[5] += 1;
                 break;
         }

         einfuegen(&anker, name, vorname, note);

         temp += note;

         counter++;
     }while(1);

     printf("Name \tVorname \tNote\n");
     printf("---------------------------------------------------\n");
     printList(&anker);
     printf("....Durchschnittsnote: %.2f\n", (double)temp / (counter - 1));
    printf("...Notenspiegel\n");
     durch((int *)spiegel);
}