As mentioned in the paper, required to build C Programming. Coding needs to save as C or CPP coding file. Code must allow the warehouse employee to key in the ” productcodes.dat” (refer to picture). By doing this way, the Code will return the product codes results. In a few scenarios, the productcodes.dat may contain valid and invalid data. the Code must be able to display valid and invalid results. For more info please refer to the documents. I am using Visual Studio 2022 as the first option. And also will consider any suggestion on a workable compiler to ensure the cpp file reader able to deliver the results.