Answer 1

variable x will read only two digit number because 2 is used with format specifier
Let's say someone enter number 123456, the number stored in variable x will be 12 and all the rest will be ignored

for value of y it's simple input

after that you see %*f, whenever * sign is used with format specifier in scanf function it escapes/ignore that input, it will not ask for input.

%5s means that only five characters word will be stored in variable text