Why does scanf appear to skip input?

Question

I am confused about scanf\'s behaviour in the following program. scanf appears to input once, and then not input again, until a stream of characters is printed.

Belo

Answer 1

You can never expect your users to enter valid things. The best practice is to read the input into a string and try to convert it to integer. If the input is not an integer, you can give an error message to the user.