STructure

[JTan]

hi,
is it possible to declare a structure as a reference parameter?
If it does, may I know why the following codes of mine
is wrong?


//initialisation
struct book_record
{
char ISBN[11];
char title[31];
char author[31];
char category[3];
char date[11];
float price;
};

struct BkArray
{
struct book_record BookArray[10];
};




void add_records(BkArray *library)
{
//variables
int number;

printf("\nEnter the number of records that you are going to enter: "
scanf("%d", &number);

for(int k = 0; k < number; k++)
{
printf(&quot;\n#%d Record:\n&quot;, k+1);
BarLine(30);
printf(&quot;Enter ISBN: &quot;

gets( library.BookArray[k].ISBN);
printf(&quot;\nEnter the title of the book: &quot;
gets( library.BookArray[k].title);
printf(&quot;\nEnter the author of the book: &quot;
gets(library.BookArray[k].author);
printf(&quot;\nEnter the price of the book: &quot;
scanf(&quot;%f&quot;, &library.BookArray[k].price);
printf(&quot;\nEnter the category of the book\n&quot;
gets( library.BookArray[k].category);
printf(&quot;\nEnter the published date in the format of dd/mm/yyyy: &quot;
gets (library.BookArray[k].date);
}//for
}//add_records

 

[Guest_imported]

you should use &quot;library->&quot; instead of &quot;library.&quot; because &quot;library&quot; is a pointer.

 

[Lim]

Also, skiping word struct in
void add_records(BkArray *library)
at least in ANSI C.

 

[JTan]

hi,

I have changed to library-> but there are still errors saying: Cannot convert
'BkArray' to 'BkArray *' in function main() and Type mismatch in parameter 'library'
in call to 'add_records(BkArray *)' in function main().

Additional code:

struct book_record
{
char ISBN[11];
char title[31];
char author[31];
char category[3];
char date[11];
float price;
};

struct BkArray
{
struct book_record BookArray[10];
};

//function prototypes
void add_records(BkArray *library);
void display_all_records(BkArray *library);
void display_information(char *IBSN, BkArray *library);
void display_books(BkArray *library);
void delete_records(char *title, BkArray *library);
void BarLine(int num);

switch(choice)
{
case 1: add_records(library);
break;
:
:

void add_records(BkArray *library)
{
//variables
int number;

printf(&quot;\nEnter the number of records that you are going to enter: &quot;
scanf(&quot;%d&quot;, &number);

for(int k = 0; k < number; k++)
{
printf(&quot;\n#%d Record:\n&quot;, k+1);
BarLine(30);
printf(&quot;Enter ISBN: &quot;

gets( library->BookArray[k].ISBN);
printf(&quot;\nEnter the title of the book: &quot;
gets( library->BookArray[k].title);
printf(&quot;\nEnter the author of the book: &quot;
gets(library->BookArray[k].author);
printf(&quot;\nEnter the price of the book: &quot;
scanf(&quot;%f&quot;, library->BookArray[k].price);
printf(&quot;\nEnter the category of the book\n&quot;
gets( library->BookArray[k].category);
printf(&quot;\nEnter the published date in the format of dd/mm/yyyy: &quot;
gets (library->BookArray[k].date);
}//for
}//add_records

May I know what is wrong at the switch statement?