Welcome to Bar Code Generator Enter Zip Code (exit to quit): 19104 Bar Code: Enter Zip Code (exit to quit): 19128 Bar Code: Enter Zip Code (exit to quit): 07004 Bar Code: Enter Zip Code (exit to quit): exit Thanks using me.
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The bar codes use large and small bars. We will use : as a small bar and | as a large bar.
Each digit has its own bar pattern.
- 1 is :::||
- 2 is ::|:|
- 3 is ::||:
- 4 is :|::|
- 5 is :|:|:
- 6 is :||::
- 7 is |:::|
- 8 is |::|:
- 9 is |:|::
- 0 is ||:::
The barcode also includes a check digit. The final digit added to the bar code verifies the previous numbers are correct.
To Determine the checksum:
- Add all the digits together
- Determine what needs to be added to make the total a multiple of 10
The bar code also always starts and ends with a large bar. This is used by the scanner to align the letter.
Drexel's Zip Code is 19104
The check digit is 5. The sum of the digits is 1+9+1+0+4 = 15. To make 15 a multiple of 10, we need to add 5.
The bar code will be |:::|||:|:::::||||::::|::|:|:|:|
The majority of work in this problem is done by digit. It makes sense to store the zip code as a string, not as an integer.
Write the function checksum(zip) that takes the zip code as a string and returns the check digit as a string.
Write a function barcode(zip) that takes a zip code as a string and returns the bar code.
Develop a main program that repeatedly asks the user for zip codes and converts them to bar codes. The program will run until the user enters "exit". Remember to use if name=="main": so that ZyBooks can test your functions.
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