only use else if C++

use case

B) Check SSN: Write a program for Programming Exercise 4.23 on p. 154 in the textbook. Additional notes or specifications: Read the input as a single string. Check the string to be sure that it is of the correct length (11). Display an appropriate error message if the string is not the correct length Check each symbol in the string for the appropriate ASCII value or range. Display an appropriate error message if the string contains any invalid symbols. If the SSN is valid display an appropriate message. Testing: Run the program for: 123-45-6789 . Another SSN of your choice (do not use yours!) o An input with the incorrect length An input with an incorrect symbol. O