Disadvantages of scanf

Question

I want to know the disadvantages of scanf().

In many sites, I have read that using scanf might cause buffer overflows. What is the reason f

Answer 1

There is one big problem with scanf-like functions - the lack of any type safety. That is, you can code this:

int i;
scanf("%10s", &i);

Hell, even this is "fine":

scanf("%10s", i);

It's worse than printf-like functions, because scanf expects a pointer, so crashes are more likely.

Sure, there are some format-specifier checkers out there, but, those are not perfect and well, they are not part of the language or the standard library.