Chapter 21, Problem 21.25E

Program Plan Intro

Checking Validity of Social Number

Program Plan:

• Include the required header files.
• Declare the prototype of the function isValidSocialSecurityNumber.
• Define the “isValidSocialSecurityNumber()” function.
• Check whether str1.length()!=11 or str1.find_first_of("-")!=3 or str1.find_last_of("-")!=6.
• If so then return false.
• Traverse through str1.
• If i is ‘-‘ at locations 3 or 6 then continue.
• If the traversed character is not a digit then return false.
• Return true.
• Define the “main()” function
• Create a string variable s and assign the social security number to it.
• Make a call to function isValidSocialSecurityNumber with s and assign to ans.
• If value of ans is 1 then display valid message.
• Else display invalid message.