Http://ide.codingblocks.com/#/s/13109

#1

http://ide.codingblocks.com/#/s/13109
Why all test cases is not passed?

https://hack.codingblocks.com/contests/c/474/60

#2

Your logic is correct, but the way you are displaying the output " uppercase alphabet " is not accepted in hacker blocks. Therefore, provide output as “lowercase”, “UPPERCASE” and “Invalid” for their respective cases.

#3

Oh yes. My bad!
THANK YOU!