scanf string in c - why can i scan more than the char[] declaration?

Question

I have a program where I need to scanf a string, which I know it will be only 2 characters long. (for example: \"ex\"). what is the proper way to do that?

I was goin

Answer 1

The proper way to limit the input using scanf() is

if (scanf("%2s", myStr) != 1) /* error */;

But consider using fgets() rather than scanf()

if (fgets(myStr, sizeof myStr, stdin) == NULL) /* error */;