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

struct musik_s
{
    char titel[30];
    char interpret[30];
    long dauer;
};
void printEntry(struct musik_s *item);
void addEntry(struct musik_s tracklist[], long length);
void getChar(void);
void listEntrys(struct musik_s tracklist[], long length);


main()
{
    long choise = 0;
    #define LEN 10
    struct musik_s tracklist[LEN] =
    {
        {"Time","Pink Floyd",7},
        {"Dogs","Pink Floyd",9},
        {"Marooned","Pink Floyd",5},
        {"Any Colour","Pink FLoyd",3},
        {"Astronomy","Blue oyster",8},

    };

    while(1){
        printf("(1) alle Eintraege ausgeben\n");
        printf("(2) einen Eintrag hinzufuegen\n");
        printf("(3) Ende\n");
        printf("Eingabe: ");
        scanf("%ld",&choise);
        getchar();
        printf("\n");

        switch (choise)
        {
            case 1:
                listEntrys(tracklist, LEN);
                break;
            case 2:
                addEntry(tracklist,LEN);
                break;
            case 3:
                exit(0);
                break;
            default:
                printf("Falsche Eingabe\n");
        }
    }
    return 0;
}

void printEntry(struct musik_s *item)
{
    printf("%10s %20s %5ld\n", item->titel, item->interpret,item->dauer);
}

void addEntry(struct musik_s tracklist[], long length)
{
    long i=0;

        while(tracklist[i].dauer > 0)
        {
        i++;
        }

    printf("Titel:");
    scanf("%s", tracklist[i].titel);
    getchar();
    printf("Interpret:");
    scanf("%s", tracklist[i].interpret);
    getchar();
    printf("Dauer:");
    scanf("%ld", &tracklist[i].dauer);
    getchar();


}

void listEntrys(struct musik_s tracklist[], long length)
{
    long i = 0;
    for(i=0;i<LEN;i++)
    {
        struct musik_s *item = &tracklist[i];
        printEntry(item);
    }
}

void getChar(void)
{
    while(getchar()!='\n') {;}
}