Read a $2-$character string from input into variable inputString. Declare a Boolean variable isValid and assign isValid with true if the following conditions are met:

inputString does not contain two of the same character.

For alphabetic characters, inputString does not contain two of the same letter $($regardless of case$).$

Otherwise, assign isValid with false.

Ex: If the input is $2^,$ then isValid is assigned with true, so the output is:

String accepted

Ex: If the input is Kk$,$ then isValid is assigned with false, so the output is:

String not accepted

Note: Use getline$($cin$,$ inputString$)$ to read the entire line from input into inputString. c$++$