Lower Upper converting

Hello Buddy,
can you help me whats issue in my code,
based on char i am checking ASCII CODE value and checking but i am facing issue please look in my code and help me
Ref: https://ide.codingblocks.com/s/312096

hey @s.v
Read the questions carefully,
Print ā€œlowercaseā€ if user enters a character between ā€˜a-zā€™ , Print ā€œUPPERCASEā€ is character lies between ā€˜A-Zā€™
for example :
input : A
output : UPPERCASE
input : a
output : lowercase
input : $
Output Invalid