Question

3) what is the use of islower() and isupper() method?

Answer 1

Answer:

islower() checks whether the given character is in lower case or not

isupper()checks whether the given character is in uppercase or not

Answer 2

Answer:

buddy it's

isupperCase(); and islowercase();

they both give in boolean type i.e. either true or false

isuppercase():It checks wheter the character is in upper case or not

islowercase():it checks if the character is in lower case or not

As already told tgey return boolean type value,so if it's true the it will return true and if it's false then it will return false.