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    <p>Observations,</p> <p>Count_List() should count each element on list, your version only counts starting at the second item on the list. And it should always return an int,</p> <pre><code>int Count_List(Library *Head) { int count = 0; Library *Tmp = Head; if(!Tmp) return(count); while(Tmp != NULL) { count++; Tmp = Tmp-&gt;next; } return(count); } </code></pre> <p>Inside Read_File() you call Create_List(Entry,Head), but your function signature for Create_List(Head,Entry); which do you intend? Probably (Head,Entry). Use fgets and sscanf to Read_File,</p> <pre><code>Library * Read_File(FILE *fp) { Library *Head, *Entry; Head = Entry = NULL; char genre[100], band[100], album[100]; float rating; char line[100]; while(fgets(line,sizeof(line),fp) { sscanf(line,"%s %s %s %f", genre, band, album, &amp;rating); Entry = Create_Album(genre, band, album, rating); Head = Create_List(Head,Entry); } return Head; } </code></pre> <p>Looking at Create_List(), you seem to be implementing the List as a stack (push Entry onto head of list),</p> <pre><code>Library * Create_List(Library *Head, Library *Entry) { if(!Head) return Entry; Entry-&gt;next = Head; return Entry; } </code></pre> <p>Create_Album() needs to check for successful malloc before assigning values to member variables,</p> <pre><code> Library *Entry=NULL; if( !(Entry=(Library*)malloc(sizeof(Library))) ) { printf("error creating album\n");fflush(stdout); return Entry; } </code></pre> <p>Speaking of Library struct, you declare the members genre, band, album as pointers, but you need space to copy memory, example,</p> <pre><code>typedef struct library { char genre[50]; char band[50]; char album[50]; float rating; struct library *next; }Library; </code></pre> <p>My suggestion would be to build constructor and destructor functions LibraryNew, LibraryDel.</p> <p>Check for (argc&lt;2) arguments (your message says not enough, instead of need 2,</p> <pre><code> if(argc &lt; 2) { printf("Not enough arguments.\n"); return 0; } </code></pre> <p>And that fixes the biggest problems,</p> <pre><code>./library music.x 2 line:Rock Antrax Party 1.2 Rock,Antrax,Party,1.200000 Rock,Antrax,Party,1.200000 added: Rock,Antrax,Party,1.200000 Rock Antrax Party 1.20 Rock Antrax Party 1.20 Which genre would you like to delete? </code></pre>
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    1. POLibrary is empty then seg fault
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    1. USChuckCottrill
    1. USChuckCottrill
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POLibrary is empty then seg fault
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    1. COCheck pointer passed to Free_Entry not NULL, if(!Entry) return;
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    2. COClean needs different check for empty, if(!Head) return NULL;
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      1. USChuckCottrill
 

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