Use your IDE to create a header file named validation.h. Add the preprocessor directives to define an include guard. Use a name for the header file that consists of your first initial and last name, followed by “_VALIDATION_H”. Define a namespace named validation. Within this namespace, declare two functions named is_valid_password and is_valid_email. Each of these functions should accept a string and return a Boolean value that indicates if the string is valid. For this to work, you’ll need to include the header file for the string class. Create an implementation file Use your IDE to create a file named validation.cpp that will implement the validation header file. Add the code to implement the validation namespace and the two functions it contains. To do that, you can copy code from the main() function for the program and paste it into the function definitions. Then, you can adjust the code as necessary so it works within the functions. For this to work, you’ll need to include the header files for the iostream and string classes. Update the file that contains the main() function to use the header file Add a using directive for the validation namespace to the file that contains the main() function. Replace the code in the main() function that validates the password with a statement that calls the is_valid_password() function and assigns the return value to the valid_password variable. Replace the code in the main() function that validates the email address with a statement that calls the is_valid_email() function and assigns the return value to the valid_email variable. Test the program to see that it works the same as it did before. Now, though, the main() function should be easier to read and understand. In addition, the functions in the header file can be used by other programs.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Use your IDE to create a header file named validation.h.
Add the preprocessor directives to define an include guard. Use a name for the header file that consists of your first initial and last name, followed by “_VALIDATION_H”.
Define a namespace named validation. Within this namespace, declare two functions named is_valid_password and is_valid_email. Each of these functions should accept a string and return a Boolean value that indicates if the string is valid. For this to work, you’ll need to include the header file for the string class.

Create an implementation file

Use your IDE to create a file named validation.cpp that will implement the validation header file.
Add the code to implement the validation namespace and the two functions it contains. To do that, you can copy code from the main() function for the program and paste it into the function definitions. Then, you can adjust the code as necessary so it works within the functions. For this to work, you’ll need to include the header files for the iostream and string classes.

Update the file that contains the main() function to use the header file

Add a using directive for the validation namespace to the file that contains the main() function.
Replace the code in the main() function that validates the password with a statement that calls the is_valid_password() function and assigns the return value to the valid_password variable.
Replace the code in the main() function that validates the email address with a statement that calls the is_valid_email() function and assigns the return value to the valid_email variable.
Test the program to see that it works the same as it did before. Now, though, the main() function should be easier to read and understand. In addition, the functions in the header file can be used by other programs.

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