I need some help with C++ and im using the program Atom

Q6: Write a complete C++ program that does the following. 1. It asks the user to enter a positive integer with 2 digits 2. If the entered number is out of range, the message "Too difficult!" is printed and the program terminates. 3. Otherwise the program prints the sum of the two digits in the number Here is an example of how the program should work (input in bold): that was entered Enter a 2-digit integer: 89 Sum of digits: 17