An incomplete topic is actually a high-quality question. Are you kidding?

The fixed-length integer constant in multiple-choice questions generally refers to the integer between-2147483648 ~ 2147483647 (closed interval).

In fact, the long integer constant may be an integer between-922337203685475808 and 92237203685475807 (closed interval).

-supplement.

There are options in the original title-there are options in the title, but I haven't shown them yet. The question of high quality is really interesting-

A is a legal long integer constant because it is an integer +'l'

B Depending on the situation, different compilers with different configurations have different results.