Hepl me to understand this program

Question

https://code.sololearn.com/c1tVS7JaCFTp/?ref=app

Answer 1

Sindhuja Selvakumar
When you round up a value normally, 3.4 is converted to 3 and 3.6 is converted to 4.
But when you use CEIL, you are telling the program to round the value to the greater integer (3.1 is rounded to 4).
Floor rounds it off to the smaller value so 3.9 is rounded to 3.

Answer 2

Thanks ..now i can understand this

Answer 3

it roundd up PI to the nearest greater integer.
pi=3.1415... the nearest greater integer is 4