README.md

Zip Code Validator

As headmaster of the post office, sometimes people write zip codes that don't exist or zip codes that are not valid.
You are tasked with making a system to check if the inputted zip code is a valid zip code.

Task:

Write a program that takes in a string representing a zip code. Output true or false if it is a valid zip code or not. A valid zip code is only numbers, must be 5 characters in length, and contain no spaces.

Input Format:

A string containing a zip code.

Output Format:

A string: true is the input is a valid zip code, or false, if it is not.

Sample Input:

752f78

Sample Output:

false

Explanation:

A valid zip code contains 5 digits, and no letters or spaces. The input is 6 characters long and contains letters, making it an invalid zip code.