C++ :

Write a program that repeatedly requests the user to enter an alphabetic character or a digit from 0 9. Then print a message identifying the character as a number, a lower case letter, or an upper case letter. Print an error message if the user enters something other than a digit or alphabetic character. For example Enter a single digit or an alphabetic character 4 You entered 4, which is a number Enter a single digit or an alphabetic character: b You entered b, which is an lower case letter Enter a single digit or an alphabetic character: You entered #, which is not a letter or a number