Have a look at the man page for printf:
man 3 printf
Answer:I really don’t know
Explanation:
Um You can look it up though
Answer:
When that information gets posted online, it is no longer private, and may end up falling into wrong hands. Even if you have put in place the highest possible security measures, some of your friends, colleagues and companies you interact with on social media, can end up leaking your personal information.