gistfile1.c

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

#ifndef TYPEDEF_ENUM_BOOLEAN_DECLARED_
#define TYPEDEF_ENUM_BOOLEAN_DECLARED_
	typedef enum{ false, true } boolean;
	char* bool_print[] = {"no", "yes"};
#endif

#ifndef BOOL_PRINT_DECLARED_
#define BOOL_PRINT_DECLARED_
	#define BOOL_FMT(bool_expr) "%s", (bool_expr) ? "true" : "false"
#endif


typedef struct song song;
typedef struct artist artist;
typedef struct playlist playlist;

struct song {
	short id;		/* unique identity of the song						*/
	char name[30]; 		/* name of song 							*/
	int duration;		/* duration in seconds							*/
	artist* artist;		/* pointer to artist							*/
	song* next;		/* pointer to next song of the same artist				*/	
};


struct artist {
	short id;		/* unique identity of artist						*/
	char name[30]; 		/* name of artist (could be a band as well)				*/
	song* songList;		/* pointer to linked list containing all songs from this artist 	*/
};


struct playlist {
	short id;		/* unique identity of playlist						*/
	song** songs;		/* all songs in this playlist 						*/
	short numberOfSongs;	/* numberOfSongs in this playlist					*/
};



/* function prototypes */
artist** input_artist_info ( artist** artist_ptr , int* numberOfArtists){
    // how long is the string read
    char str[60];
    // for printing integers
	char print_integer[5];
    // where student 'database' is.
    char* file_to_open="artists.txt";


    int i;

    FILE *fp;
    fp = fopen (file_to_open, "r"); //open in read mode

    if (fp == NULL){
        printf("\nError, Unable to open the file for reading\n");
    }

	//artist* artist_list = calloc(15, sizeof(artist)); mark had dit verzonnen
	struct artist *artist_list;
	artist_list=(struct artist*)malloc(sizeof(struct artist));

    while(fgets(str, sizeof(str), fp) != NULL && str[0]!='\n')
    {   
    	int artist_id;
    	char artist_name[30];
		//puts(str);
		sscanf(str, "%i %[^\t\n]", &artist_id, artist_name);
		//puts(artist_id);
		//printf("%c\n",*artist_name);
		//printf(artist_id);

		printf("%i", artist_id);
		printf("\n");
		printf(artist_name);
		printf("\n");
		artist_list[i].id = artist_id;
		strcpy(artist_list[i].name, artist_name);
		//(artist_list+i)->id = artist_id;
		//(artist_list+i)->name = artist_name;

		i++;

    }

    fclose(fp);
} 
		/* at start and exit: numberOfArtists indicates about how many artists info is stored  	*/
		/* artist_ptr is the variable used to access info about all the artist                	*/ 
		
struct artist *a = NULL;
struct song *s = NULL;
struct playlist *p = NULL;



artist* find_artist( artist** artist_ptr , int id){

}
		/* id indicates the artists id that needs to be found				  	*/
		/* artist_ptr is the variable used to access info about all the artist			*/



boolean input_song_info ( song** song_ptr );    
		/* song_ptr is the variable used to access info about all the songs                	*/ 


playlist** compose_playlist ( playlist** playlist_ptr , int* numberOfPlaylists);    
		/* at start and exit: numberOfPlaylists indicates the number of playlists stored  	*/
		/* playlist_ptr is the variable used to access info about all the playlists          	*/ 


void playlist_stats ( playlist* playlist_ptr , int numberOfPlaylists);    
		/* numberOfPlaylists indicates the number of playlists stored  				*/
		/* playlist_ptr is the variable used to access info about all the playlists          	*/ 



int main(int argc, char *argv[]){

	int numberOfArtists = 0;
	int numberOfSongs = 0;
	int numberOfPlaylists = 0;



	input_artist_info(&a, &numberOfArtists);
    scanf("\n");

	return 0;
}