All test cases are not passed

#1

Why all test cases are not passed and tell me how can i solve this programm without use of ascii values.

#2

you can use if else statements to check if the given character is greater than equal to ‘a’ and less than equal to ‘z’ if it is then its lower case else its not, same you can do with upper case as well
Code

#3

How can i solve this question withiut the help of ascii code.

#4

the code i have provided does not use ascii values.

#5

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