How do you read from a file into an array of struct?
- by Thomas.Winsnes
I'm currently working on an assignment and this have had me stuck for hours. Can someone please help me point out why this isn't working for me?
struct book
{
char title[25];
char author[50];
char subject[20];
int callNumber;
char publisher[250];
char publishDate[11];
char location[20];
char status[11];
char type[12];
int circulationPeriod;
int costOfBook;
};
void PrintBookList(struct book **bookList)
{
int i;
for(i = 0; i < sizeof(bookList); i++)
{
struct book newBook = *bookList[i];
printf("%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d\n",newBook.title, newBook.author, newBook.subject,
newBook.callNumber,newBook.publisher, newBook.publishDate, newBook.location, newBook.status,
newBook.type,newBook.circulationPeriod, newBook.costOfBook);
}
}
void GetBookList(struct book** bookList)
{
FILE* file = fopen("book.txt", "r");
struct book newBook[1024];
int i = 0;
while(fscanf(file, "%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d",
&newBook[i].title, &newBook[i].author, &newBook[i].subject,
&newBook[i].callNumber,&newBook[i].publisher, &newBook[i].publishDate,
&newBook[i].location, &newBook[i].status,
&newBook[i].type,&newBook[i].circulationPeriod, &newBook[i].costOfBook) != EOF)
{
bookList[i] = &newBook[i];
i++;
}
/*while(fscanf(file, "%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d",
&bookList[i].title, &bookList[i].author, &bookList[i].subject,
&bookList[i].callNumber, &bookList[i].publisher, &bookList[i].publishDate,
&bookList[i].location, &bookList[i].status, &bookList[i].type,
&bookList[i].circulationPeriod, &bookList[i].costOfBook) != EOF)
{
i++;
}*/
PrintBookList(bookList);
fclose(file);
}
int main()
{
struct book *bookList[1024];
GetBookList(bookList);
}
I get no errors or warnings on compile
it should print the content of the file, just like it is in the file.
Like this:
OperatingSystems Internals and Design principles;William.S;IT;741012759;Upper Saddle River;2009;QA7676063;Available;circulation;3;11200
Communication skills handbook;Summers.J;Accounting;771239216;Milton;2010;BF637C451;Available;circulation;3;7900
Business marketing management:B2B;Hutt.D;Management;741912319;Mason;2010;HF5415131;Available;circulation;3;1053
Patient education rehabilitation;Dreeben.O;Education;745121511;Sudbury;2010;CF5671A98;Available;reference;0;6895
Tomorrow's technology and you;Beekman.G;Science;764102174;Upper Saddle River;2009;QA76B41;Out;reserved;1;7825
Property & security: selected essay;Cathy.S;Law;750131231;Rozelle;2010;D4A3C56;Available;reference;0;20075
Introducing communication theory;Richard.W;IT;714789013;McGraw-Hill;2010;Q360W47;Available;circulation;3;12150
Maths for computing and information technology;Giannasi.F;Mathematics;729890537;Longman;Scientific;1995;QA769M35G;Available;reference;0;13500
Labor economics;George.J;Economics;715784761;McGraw-Hill;2010;HD4901B67;Available;circulation;3;7585
Human physiology:from cells to systems;Sherwood.L;Physiology;707558936;Cengage Learning;2010;QP345S32;Out;circulation;3;11135
bobs;thomas;IT;701000000;UC;1006;QA7548;Available;Circulation;7;5050
but when I run it, it outputs this:
OperatingSystems;;;0;;;;;;0;0
Internals;;;0;;;;;;0;0
and;;;0;;;;;;0;0
Design;;;0;;;;;;0;0
principles;William.S;IT;741012759;Upper;41012759;Upper;;0;;;;;;0;0
Saddle;;;0;;;;;;0;0
River;2009;QA7676063;Available;circulation;3;11200;lable;circulation;3;11200;;0;;;;;;0;0
Communication;;;0;;;;;;0;0
Thanks in advance, you're a life saver
