How passing the address of a format specifier work in a printf statement?

Question

https://code.sololearn.com/cFy5upW0e5fV/?ref=app

Answer 1

Martin Taylor yeah ! the latter part ! Could you explain? format specifier string

Answer 2

Martin Taylor okay

Answer 3

Martin Taylor how does passing the address work in printf ?

Answer 4

What you answered is something obvious !