How can I make each scanf working without skip

Question

I make the loop with gets and scanf. Actually I make the space for newline buffer. so I think each scanf works but when I input value to &books[ctr].cost compiler skip next 3 questions. I don't know why It work like this

books is structure variable

for (ctr = 0 ; ctr < 3 ; ctr++)
{
    printf("What is the name of the book #%d?\n", (ctr+1));
    gets(books[ctr].title);
    puts("Who is the author?  ");
    gets(books[ctr]. author);
    puts("How much did the book cost?  ");
    scanf("  $%f", &books[ctr].price);
    puts("How many pages in the book?  ");
    scanf("  %d", &books[ctr].pages);
    getchar( );
}
printf("\n\n Here is the collection of books : \n");
for (ctr = 0 ; ctr < 3 ; ctr ++)
{
    printf("#%d: %s by %s", (ctr+1), books[ctr].title, books[ctr].author);
    printf("\n It is %d pages and costs $%.2f", books[ctr].pages, books[ctr].price);
    printf("\n\n");
}

return 0;

}

Please [edit] your question to include a [mcve]. What happens *before* the code you show? What is the expected output? What is the actual output? And what input do you give the program? — Some programmer dude, Nov 11 '20 at 08:02
Also please take some time to read [ask], as well as [this question checklist](https://codeblog.jonskeet.uk/2012/11/24/stack-overflow-question-checklist/). — Some programmer dude, Nov 11 '20 at 08:02
Lastly, always check what `scanf` [***returns***](https://en.cppreference.com/w/c/io/fscanf#Return_value). — Some programmer dude, Nov 11 '20 at 08:03

score 0 · Answer 1 · answered Nov 11 '20 at 07:58

0

First of all, two suggestions:

Do not use gets() at all, it's dangerous and deprecated.
Also, avoid using scanf() for direct user inputs, it's not worth it.

Use fgets() to take user input, and then convert to appropriate form using sscanf().

answered Nov 11 '20 at 07:58

Sourav Ghosh

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but this is my college assignment and It's example from my major textbook. so It must work with that code. I don't know why It's not working – Jeon Soo min Nov 11 '20 at 08:09

How can I make each scanf working without skip

1 Answers1